ECAT Pre Computer Science Chapter 15 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

Try The MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

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ECAT Physics Chapter 15 Electromagnetic Induction

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Question # 1

The current produced by moving a loop of wire across a magnetic field is called:

Question # 2

In magnet-coil experiment, emf can be produced by:

Question # 3

Split rings act as

Question # 4

An induced current can be produced by

Question # 5

When there is no relative motion between the magnet and coil, the galvanometer indicates:

Question # 6

The induced current is a conductor depends upon:

Question # 7

Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current

Question # 8

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

Question # 9

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

Question # 10

The direction of induced current is always so as to oppose the cause which produces it. This is

Question # 11


The magnitude of induced emf depends upon the:

Question # 12

In magnet-coil experiment, emf can be produced by:

Question # 13

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Question # 14

The current produced by moving a loop of a wire across a magnetic field is called:

Question # 15

Referring to above figure, current in the coil P grows from zero to its maximum value

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
2 The magnitude of induced emf depends upon the
A. Rate of decrease of magnetic field
B. Rate of change of magnetic field
C. Rate of increase of magnetic flux
D. Constancy of magnetic field
3 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
4 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
5 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
6 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic feild
D. Constant electric field
7 The phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
8 The induced current in the loop can be increased by:
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All above
9 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
10 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law

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