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 induced current in a conductor depends upon:

Question # 2

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

Question # 3

A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:

Question # 4

The magnitude of induced emf depends upon the:

Question # 5

An emf is set up in a conductor when it:

Question # 6

An induced current can be produced by

Question # 7

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

Question # 8

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

Question # 9

Referring to above figure, due to change in current in the coil P, the change in magnetic flux:

Question # 10

The device in which induced emf is statically induced emf is:

Question # 11

Motional emf is called motional:

Question # 12

An induced current can be produced by:

Question # 13

The induced current in the loop can be increased by:

Question # 14

Referring to above figure, due to change in current in the coil P, the change in magnetic flux

Question # 15

Faraday's law of electromagnetic induction has been used in the construction of:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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:
A. 0.2 henry
B. 0.1 henry
C. 0.8 henry
D. 0.04 henry
2 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
3 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
4 The practical application of the phenomenon of Mutual induction is
A. Transformers
B. Generator
C. Motor
D. All of these
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 The current produced by moving a loop of wire across a magnetic field is called:
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
7 For inducting emf in a coil the basic requirement is that:
A. Flux should link the coil
B. Change in flux should link the coil
C. Coil should form a closed loop
D. Both B and C are true
8 Eddy current is produced when:
A. A metal is kept in varying magnetic field
B. A metal is kept in steady magnetic field
C. A circular coil is placed in a steady magnetic field
D. A current is passed through a circular coil
9 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
10 An induced current can be produced by
A. Constant magnetic field
B. Changing magnetic field
C. Varying electric field
D. Constant electric field

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