ECAT Pre Computer Science Chapter 15 MCQ Test With Answer

Top Scorers Of ECAT Physics Chapter 15 Electromagnetic Induction MCQ`s Test

Sr.#	Question	Answer
1	Which of the following is most suitable as the core of transformer	A. Soft iron B. Alinco C. Steel D. None of these
2	Back emf is produced due to	A. Self induction B. Mutual induction C. A.C D. Lenz's law
3	The work is stored in the inductor as	A. Electric potential energy B. Elastic potential energy C. Magnetic energy D. Absolute potential energy
4	The law of electromagnetic induction is related to:	A. Coulomb B. Ampere C. Faraday D. Lenz
5	The change of magnetic flux through a circuit will produce	A. Magnetic Field B. Electric Field C. emf D. a.c
6	A.C. can be measure with the help of	A. Nuclear effect B. Magnetic effect C. Chemical effect D. Heating effect
7	An induced current can be produced by:	A. Constant magnetic field B. Changing magnetic field C. Varying magnetic feild D. Constant electric field
8	The induced current in the loop can be increased by:	A. Using a strong magnetic field B. Moving the loop faster C. Replacing the loop by a coil of many turns D. All of above
9	The direction of induced current is always so as to oppose the cause which produces it. This is	A. Lenz's law B. Ampere's law C. Faraday's law D. Coulomb's law
10	The motional e.m.f depends upon the	A. Length of a conductor B. Strength of a magnet C. Speed of the conductor D. All of the above