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 magnitude of induced emf depends upon the

Question # 2

The Phenomenon of generation of induced emf is called

Question # 3

Back emf is produced due to

Question # 4

The induced current in a conductor depends upon:

Question # 5

Self inducede e.m.f. is also called

Question # 6

The induced current in the loop can be Increased by

Question # 7

An emf is set up in a conductor when it

Question # 8

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

Question # 9

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

Question # 10

A device which converts Electrical energy into mechanical energy is called as

Question # 11

The motional e.m.f depends upon the

Question # 12

The phenomenon of generation of induced emf is called

Question # 13

The law of electromagnetic induction is related to:

Question # 14

When the conductor moved across a magnetic field:

Question # 15

An emf is set up in a conductor when it:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
2 Which of the following is most suitable as the core of transformer
A. Soft iron
B. Alinco
C. Steel
D. None of these
3 The induced current in a conductor depends upon:
A. Resistance of the loop
B. Speed with which the conductor moves
C. Any of these
D. Both A and B
4 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
5 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
6 In magnet-coil experiment, emf can be produced by:
A. Keeping the coil stationary and moving the magnet
B. Keeping the magnet stationary and moving the coil
C. Relative motion of the loop and magnet
D. Any one of above
7 When the conductor moved across a magnetic field:
A. Emf induced is similar to that of a battery

B. Emf induced gives rise to induced current

C. An emf induced across its ends

D. All are correct
8 An emf is set up in a conductor when it
A. Is kept in a magnetic field
B. Is kept in an electric field
C. Moves across a magnetic field
D. Both A and B
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 An emf is set up in a conductor when it:
A. Is kept in a magnetic field
B. Is kept in an electric field
C. Moves across a magnetic field
D. Both A and B

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