Consider two points A and B. 2. Magnetic field lines form a closed-loop. In the formula, B represents the magnetic flux density, 0 is the magnetic constant whose value is 4 x 10-7 Hm-1 or 12.57 x 10-7 Hm-1, N represents the number of turns, and I is the current flowing through the solenoid. Question 5. (c) at a point located in the plane of the paper, on the north side of the wire 6. These rules do not determine the magnitude but instead show the direction of any of the three parameters (magnetic field, current, force) when the direction of the other two parameters is known. The general types of check valves are swing, tilting-disk, piston, butterfly, and stop. Now diagnosing the problem becomes much easier with the help of the invention of X-Ray, Ultrasonography, ECG, MRI, Penicillin, etc. Magnetic field lines appear to emerge or begin at the north pole and terminate at the south pole. (a) Flemings right-hand rule is a simple rule to know the direction of induced current. (d) use of electric meter. Corona discharge can cause an audible hissing or cracking noise as it ionizes the air around the conductors. To understand armature windings in a DC generator, we first need to understand pole pitch, coils, and coil span.. What is Pole Pitch? Magnetic field lines around a straight conductor forms a pattern of The section contains multiple choice questions and answers on advanced, tricky, tough electromagnetic theory. Each paper writer passes a series of grammar and vocabulary tests before joining our team. Click Start Quiz to begin! ON OFF Valve Preventive Maintenance and Testing Procedure, Control Valve Accessories Principle, Purpose, Advantages. Electromagnetic induction Therefore, magnetic field lines are represented by a vector. (g) current always flows in one direction. (d) found to increase from one end to the other. (a) directly above the wire (b) red Some important properties of magnetic field lines are listed below . The insulation colour of earth wire is 4. (b) No two field lines can cross each other The section contains questions and answers on transmission line primary,secondary parameters with equations, power and return loss,standing waves, reflection and transmission coefficients. The seating surface is placed at a slight angle to permit easier opening at lower pressures, more positive sealing, and less shock when closing under higher pressures. Turbulence and pressure drop within the valve are very low. Straight body swing check valves contain a disk that is hinged at the top. The safety device which is used to protect the circuit from short circuiting and overloading Magnetic field lines appear to emerge or start from the north pole and merge or terminate at the south pole. No tracking or performance measurement cookies were served with this page. The section contains questions and answers on cartesian, cylindrical and spherical Coordinate System. The section contains questions and answers on conductors, dielectrics and its strengths, polarization and boundary conditions. Principle of electric generator We hope the given NCERT MCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current with Answers Pdf free download will help you. This way of systematic learning will prepare you easily for Electromagnetic Theory exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications. It will immensely help anyone trying to crack an exam or an interview. 2022 Reproduction without explicit permission is prohibited. Optimized production requires extensive data analysis - of machines, production lines, entire factories. Move the compass needle to different positions and mark the directions. (d) square shape. Electric flux refers to the number of electric field lines passing through a closed surface. The difference between the direct current and alternating current is that the direct current flows in direction, whereas the alternating current its direction periodically. electric field-intensity, density, potential and electrostatic energy and proprties. Wish you the best in your endeavor to learn and master Electromagnetic Theory! The closeness or density of the field lines is directly proportional to the strength of the field. As mentioned, voltage is defined as the electric potential difference per unit charge between two points in an electric field. Choose the incorrect statements from the following regarding magnetic lines of field. (d) there are momentary galvanometer deflections that die out shortly; the deflection are in opposite directions. Worldwide demand for electric cars is on the rise, while the driving public also those of us unwilling to make the move away from conventional drive systems dreams of ever more individually designed cars. 5. The formulas for converting between degree Celsius and degree Fahrenheit are: To find the temperature when both are equal, we use an old algebra trick and just set F = C and solve one of the equations. The formula of electric field is given as; E = F /Q. (c) if magnetic field lines are parallel and equidistant, they represent zero field strength (c) straight lines parallel to each other (Due to earths magnetic field) Mathematically, it can be represented as a vector field which can be plotted as different sets on a grid. Here the magnetic field lines never cross each other and never stop. At any point on the field, field lines have both direction and magnitude. The N-pole of the resultant magnet is on the faces close to 3. Be the first to get exclusive content straight to your email. The fact that they intersected at a whole number is purely coincidental. PLCs play a crucial role in the field of automation, using forming part of a larger SCADA system. 1000+ Electromagnetic Theory MCQ PDF arranged chapterwise! The section contains MCQs on maxwell law 1, 2, 3, 4 and also maxwell law in time static fields as well as time varying fields. (a) more at the ends than at the centre Question 7. Select the incorrect statement (c) use of stabilizers (b) B The sequence impedance varies with the type of power system components under consideration:-. A PLC can be programmed according to the operational requirement of the process. Magnetic field lines never intersect with each other. (b) elliptical in shape 3. Answer: (b) electrical energy to mechanical energy. By convention the magnetic field lines emerge from pole and merge at pole. (a) the deflection in the galvanometer remains zero throughout. Q is the charge. Lenzs law of electromagnetic induction states that the direction of this induced current will be such that the magnetic field created by the induced current opposes the initial changing magnetic field which produced it. You can unsubscribe at any time. (a) 240 V (d) at a point located in the plane of the paper, on the south side of the wire. Electricity and electric and electronic equipment plays a vital role in our everyday life. This is common in high voltage electric power transmission lines. In previous fault calculation, Z 1, Z 2 and Z 0 are positive, negative and zero sequence impedance respectively. The magnetic field is the region around a magnetic material or moving electric charge within which the force of magnetism acts. Assertion : On bringing a positively charged rod near the uncharged conductor, the conductor gets attracted towards the rod. Why Restriction Orifice is some distance from Blowdown valve ? 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About Our Coalition. A swing check valve allows full, unobstructed flow and automatically closes as pressure decreases. The section contains questions and answers on magnetic force, torque, dipole, materials, energy, circuits and boundary conditions. magnetic field in intensity as well as density and also magnostatic energy and its properties. It is a visual tool used to visualize the direction and the strength of the magnetic field. (b) minimum in the middle 4. The magnitude of this induced EMF depends upon the rate of change of flux Check the below NCERT MCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current with Answers Pdf free download. Magnetic field can be depicted in several ways. F = (F * 9/5) + 32 F (F * 9/5) = 32-4/5 * F = 32 F = -32 * 5/4 F = -40. (a) the direction of magnetic field at a point is taken to be the direction in which the north pole of a magnetic compass needle points Joining the points shows the magnetic field lines. This was changed around the time of Celsius death in 1744, by two eminent contemporary scientists working independently of each other Frenchman Jean-Pierre Christin and Celsius fellow Swede Carolus Linnaeus. They are recommended for lines having low velocity flow and should not be used on lines with pulsating flow when the continual flapping or pounding would be destructive to the seating elements. Answer (b) Though the net charge on the conductor is still zero but due to induction negatively charged region is nearer to the rod as The direction of magnetic field at a point will be North to South 2022 Reproduction without explicit permission is prohibited. Simple Conversions ofCelsius and Fahrenheit Temperature Scales, F to C : Deduct 32, then multiply by 5, then divide by 9, C to F : Multiply by 9, then divide by 5, then add 32, C to F :Add 40, multiply by 9/5, then subtract 40, F to C : Add 40, multiply by 5/9, then subtract 40. Electrical Engineering MCQs Need help preparing for your exams? Question 1. Web At the centre of current carrying loop the magnetic field appears to be a , Across Where, E is the electric field. The role of science is very important in our everyday life. The direction of induced current is given by The pressure of the fluid passing through the system opens the valve, while any reversal of flow will close the valve. The section contains multiple choice questions and answers on coulomb and gauss law with applications, electric field-intensity, density, potential and electrostatic energy and proprties. (b) there is a momentary deflection in the galvanometer but it dies out shortly and there is no effect when the keys is removed. This type of check valve usually has replaceable seat rings. When the gauge is unstrained, the bridge is balanced, and voltmeter shows zero value. The pressure of the fluid passing through the system opens the valve, while any reversal of flow will close the valve. 7. In either style, the disk and hinge are suspended from the body by means of a hinge pin. This law states that when a conductor moves in a magnetic field it cuts magnetic lines of force, which induces an electromagnetic force (EMF) in the conductor.. Closure is accomplished by the weight of the check mechanism, by back pressure, by a spring, or by a combination of these means. Field lines have both direction and magnitude at any point on the field. (a) concentric circles A swing check valve is normally recommended for use in systems employing gate valves because of the low pressure drop across the valve. Question 14. The figure here shows electric field lines. Then (b) concentric ellipse The section contains MCQs on laplace and poisson equations, resistances, capacitances and images. (c) straight line Magnetic field lines form a closed-loop. (a) earthing atmatm24365atm 10 Lines on Essay on Wonders of Science in English. As there is a change in resistance of strain gauge, the bridge gets unbalanced and producing an indication at the voltmeter. A circular loop placed in a plane perpendicular to the plane of paper carries a current when the keys is ON. (c) chemical energy to mechanical energy (d) The relative strength of the magnetic field is shown by degree of closness of the field lines. Its SI unit is voltmeter. (c) A if the current is small, and B if the current is large Exercise Questions. (d) white. Response Time Test of RTD and Thermocouple, RTD Calculator : Calculate Temperature from Resistance, Thermistors and Resistance Temperature Detectors (RTDs), Thermocouple Temperature Measurement Errors. (c) 280 V It is the best reference material to build a foundation for Science subjects for both board and other entrance Different Types of Actuators, Difference Between Linear Actuator and Rotary Actuator, How to Protect Pumps from Cavitation? In the manufacturing industry, there will be a need for reprogramming due to the change in the nature of production. They have different slopes and are non-parallel with a single solution. 1. Types & Advantages, Zero Suppression and Zero Elevation Calculations. Let us describe this using equations. For a current in a long straight solenoid, N- and S-poles are created at the two ends. Feedforward Control with Dynamic Compensation, 4-20mA Junction Box versus Fieldbus (FF) Junction Box, What is a Feedback Control System? ResearchGate is a network dedicated to science and research. In the manufacturing industry, there will be a need for reprogramming due to the change in the nature of production. -. MCQs in all electrical engineering subjects including analog and digital communications, control systems, power electronics, electric circuits, electric machines (a) Flemings right hand rule Test Your Knowledge On Properties Of Magnetic Field Lines! field lines are drawn over the horizontal plane ABCD, the lines are Question 3. Both the Celsius to Fahrenheit and Fahrenheit to Celsius equations are linear (no quadratic terms) implying they are straight lines. Question 13. The disk seals against the seat, which is integral with the body. So the temperature when both the Celsius and Fahrenheit scales are the same is -40 degrees. A coil of many circular turns of insulated copper wire wrapped closely in shape of a cylinder is called a . Flemings Left-Hand rule is mainly applicable to electric motors and Flemings Right-Hand rule is mainly applicable to electric generators. () Magnetic field lines are closed curves AC generator converts energy into energy. The section contains MCQs on types and properties of waveguides with cut-off frequency and wavelength, traverse electric, magnetic and electric magnetic waves, transients. All for free. Answer: (c) Field lines can cross each other. Alternating current Intrinsic Impedance and Propagation Constant, Advanced Electromagnetic Theory Questions, Instrumentation Engineering MCQ PDF Download, 1000 Data Structures & Algorithms II MCQs, 50k Electronics & Communication Engg MCQs. The impedance offered by the system to the flow of zero sequence current is known as zero sequence impedance. The magnetic field is stronger at the poles because the field lines are denser near the poles. Swing check valves are available in either Y-pattern or straight body design.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'instrumentationtools_com-box-4','ezslot_15',165,'0','0'])};__ez_fad_position('div-gpt-ad-instrumentationtools_com-box-4-0'); A straight check valve is illustrated in Figure. In this circuit, R 1 and R 3 are the ratio arms equal to each other, and R 2 is the rheostat arm has a value equal to the strain gage resistance. He originally defined 0 as the boiling point and 100 as the freezing point. (c) Field lines can cross each other Among the following statements, the incorrect statement is Magnetic field lines are the lines in a magnetic field whose tangent indicates the field direction at any given position and whose density gives the field magnitude. Answer: (a) E 1 > E 2 (d) mechanical energy to light energy. PLCs play a crucial role in the field of automation, using forming part of a larger SCADA system. Question 11. (b) magnetic field lines are closed curves The magnetic field lines point from B to A. (c) there are momentary galvanometer deflections that die out shortly; the deflections are in the same direction. (d) B if the current is small and A if the current is large. Requested URL: byjus.com/ncert-solutions-class-7-science/chapter-14-electric-current-and-its-effects/, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36. The MCQ Test offered by Embibe is curated based on revised CBSE Class Books, paper patterns and syllabus for the year 2021. (b) electrical energy to mechanical energy The compass needle should be placed on a piece of paper near the magnet. (b) the strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions Class 11 Business Studies, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 8 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions For Class 6 Social Science, CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, JEE Advanced Previous Year Question Papers, JEE Main Chapter-wise Questions and Solutions, JEE Advanced Chapter-wise Questions and Solutions, JEE Main 2022 Question Papers with Answers, JEE Advanced 2022 Question Paper with Answers. Since this matched the arrangement of the other scales then in use (Fahrenheit and Reaumur, mostly Kelvin and Rankine were about a century away still), the proposals were widely accepted and we still use 0 for freezing and 100 for boiling today. Fuse, Down: The magnetic field is a field produced by the magnet or electric charges in motion. Therefore, magnetic field lines are vectors. Faradays law states that a current will be induced in a conductor which is exposed to a changing magnetic field. The current which reverses its direction periodically Reason : Both the Celsius to Fahrenheit and Fahrenheit to Celsius equations are linear (no quadratic terms) implying they are straight lines. Inside the magnet, the direction of the magnetic field lines is from the south pole to the north pole. Question 2. (a) the field lines inside the solenoid are in the form of straight lines which indicates that the magnetic field is the same at all points inside the solenoid Question 9. The section contains multiple choice questions and answers on types of polarization, plane waves in free space, dielectrics as well as good conductor, brewster angle and snell law. These valves are activated by the flowing material in the pipeline. Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 170 years.Active around the world, the company focuses on intelligent infrastructure for buildings and distributed energy systems and on automation and digitalization in the process and The electric flux density at any point in the field is defined as the number of lines of force crossing perpendicularly a unit surface area at that point. Full membership to the IDM is for researchers who are fully committed to conducting their research in the IDM, preferably accommodated in the IDM complex, for 5-year terms, which are renewable. Coulomb Law; Short and Open Circuit Lines; 12. This condition can be partially corrected by using an external lever and weight. In the arrangement shown in the figure there are two coils wound on a non-conducting cylindrical rod. 5. (d) In India, the AC changes direction after every \(\frac{1}{50}\) second. If the key in the arrangement figure given below is taken out (the circuit is made open) and magnetic . (d) 220 V. 1. Check the direction in which the compass needle points and mark the direction. A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in the figure. Then the key is inserted and later removed. Magnetic field around a straight conductor Magnetic Field Unit and Measurement Select the correct answer and click on the Finish buttonCheck your score and answers at the end of the quiz, Visit BYJUS for all JEE related queries and study materials, Frequently Asked Questions on Properties of Magnetic Field Lines. The corona effect will occur in high voltage systems unless sufficient care is taken to limit the strength of the surrounding electric field. The electric field strength at P 1 is E 1 and that at P 2 is E 2 If distance between P 1, P 2 is r, then which of the following statement is true? Magnetic Effects of Electric Current Class 10 MCQ; Sources of Energy Class 10 MCQ; Moving on from whole numbers to topics like decimals, lines and angles and more, class 5 offers a simple yet interesting range of topics. (a) blue MCQ Questions for Class 10 Science with Answers were prepared based on the latest exam pattern. Its SI unit is Weber and in CGS is Maxwell. Full membership to the IDM is for researchers who are fully committed to conducting their research in the IDM, preferably accommodated in the IDM complex, for 5-year terms, which are renewable. C = (C * 9/5) + 32C (C * 9/5) = 32-4/5 * C = 32C = -32 * 5/4C = -40, F = (F * 9/5) + 32F (F * 9/5) = 32-4/5 * F = 32F = -32 * 5/4F = -40. Magnetic flux is the total number of magnetic field lines passing through a particular area. (c) green (a) mechanical energy to electrical energy A computer network is a set of computers sharing resources located on or provided by network nodes.The computers use common communication protocols over digital interconnections to communicate with each other. 5. Waveguides Prop 30 is supported by a coalition including CalFire Firefighters, the American Lung Association, environmental organizations, electrical workers and businesses that want to improve Californias air quality by fighting and preventing wildfires and reducing air pollution from vehicles. (a) E 1 > E 2 (b) E 1 < E 2 (c) E 2 = rE 1 (d) E 2 = E 1 /r. We promise not to spam you. Connect, collaborate and discover scientific publications, jobs and conferences. (b) The right-hand thumb rule is used to find the direction of magnetic fields due to current carrying conductors. Question 4. Magnetic field lines do not cross one another. Digital Image Processing MCQ (Multiple Choice Questions) with dip tutorial, introduction, analog image vs digital image, signal, system, keywords, origin of camera, photography, etc. Question 15. Pole pitch is defined as the peripheral distance between the center of two adjacent poles in a DC machine. Why Thermocouple Reference Junction Compensation Required ? 4. NCERT Solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current aid students in improving the self-confidence in their preparation for the examinations. The set of vectors are connected with lines. These interconnections are made up of telecommunication network technologies, based on physically wired, optical, and wireless radio-frequency methods that Seating is either metal-to-metal or metal seat to composition disk. Our 1000+ Electromagnetic Theory MCQs (Multiple Choice Questions and Answers) focuses on all chapters of Electromagnetic Theory covering 100+ topics. You should practice these MCQs for 1 hour daily for 2-3 months. Initially the key is not inserted. (b) use of fuse Access NCERT Solutions for Class 7 Science Chapter 14 Electric Current and Its Effects. You can also download the PDF of Electromagnetic Theory MCQs by applying below. You can refer to NCERT Solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Magnetic fields are represented using magnetic field lines. Answer: (c) straight lines parallel to each other (Due to earths magnetic field). F is a force. All Rights Reserved. Red. Choose the incorrect statements from the The strength of magnetic field inside a long current carrying straight solenoid is The direction of this current flow can be This distance is measured in terms of armature slots or armature conductors that come between two adjacent pole centers. We are not permitting internet traffic to Byjus website from countries within European Union at this time. According to new CBSE Exam Pattern, MCQ Questions for Class 10 Science pdf Carries 20 Marks. Colour of insulation of live wire, Answer: (d) concentric circles near the point O but of elliptical shapes as we go away from it. The direction of magnetic field produced by a current carrying conductor can be found out by using Magnetic field and field lines: The influence of force surrounding a magnet is called magnetic field. Therefore, magnetic field lines are represented by a vector. Field lines have both direction and magnitude at any point on the field. You can refer to NCERT Solutions forClass 10 Science Chapter 13 Magnetic Effects of Electric Current to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Magnetic field in a long solenoid is homogeneous and its strength doesnt depend (c) The difference between the direct and alternating currents is that the current always flows in one direction, whereas the alternating current reverses its direction periodically. Electric motor is a device which converts So the temperature when both the Celsius and Fahrenheit scales are the same is -40 degrees. A PLC can be programmed according to the operational requirement of the process. The device which convert electrical energy into mechanical energy Answer: (d) there are momentary galvanometer deflections that die out shortly; the deflection are in opposite directions. Swing check valves are usually installed in conjunction with gate valves because they provide relatively free flow. The tangent drawn to the magnetic field lines gives the direction of the magnetic field. Solenoid Valve with Manual Reset Working Principle, What is an Actuator? Answer: (c) if magnetic field lines are parallel and equidistant, they represent zero field strength. (a) concentric circles (b) directly below the wire The field lines are denser near the poles, which indicates that the magnetic field is stronger at the poles. (d) the N- and S-poles exchange position when the direction of current through the solenoid is reversed. An electric motor is rotating device that converts energy to energy. The section contains multiple choice questions and answers on laws like-biot savart, faraday, lenz, ampere and maxwell laws. RD Sharma Solutions , RS Aggarwal Solutions and NCERT Solutions. (c) same at all points (c) Right hand thumb rule Reasons, Solutions. If you have any queries regarding Magnetic Effects of Electric Current CBSE Class 10 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon. 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