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

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

Question # 2

An emf is set up in a conductor when it

Question # 3

An induced current can be produced by:

Question # 4

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 5

Transformer is used to

Question # 6

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

Question # 7

The practical application of the phenomenon of Mutual induction is

Question # 8

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

Question # 9

Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is:

Question # 10

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

Question # 11

The rate change of area expressed is expressed in:

Question # 12

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

Question # 13

The induced current is a conductor depends upon:

Question # 14

A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:

Question # 15

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

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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 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
3 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge
4 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
5 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
6 The practical application of the phenomenon of Mutual induction is
A. Transformers
B. Generator
C. Motor
D. All of these
7 The induced current is 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)
8 Referring to above figure, due to change in current in the coil P, the change in magnetic flux
A. Is associated with coil P
B. Is associated with coil S
C. Causes and induced current in coil S
D. All of these
9 The law of electromagnetic induction is related to:
A. Coulomb
B. Ampere
C. Faraday
D. Lenz
10 Referring to above figure, due to change in current in the coil P, the change in magnetic flux:
A. Is associated with coil P
B. Is associated with coil S
C. Causes an induced current is coil S
D. All of these

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