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

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

Question # 2

The practical application of the phenomenon of Mutual induction is

Question # 3

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

Question # 4

The phenomenon of generation of induced emf is called:

Question # 5

An emf is set up in a conductor when it:

Question # 6

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

Question # 7

The unit of induced emf is:

Question # 8

Transformer is used to

Question # 9

The induced current is a conductor depends upon:

Question # 10

Self inducede e.m.f. is also called

Question # 11

An emf is set up in a conductor when it

Question # 12

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

Question # 13

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

Question # 14

An induced current can be produced by:

Question # 15

In magnet-coil experiment, emf can be produced by

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
A. Motion emf
B. Electrostatic emf
C. Induced emf
D. Both A and B
2 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)
3 Which of the following is most suitable as the core of transformer
A. Soft iron
B. Alinco
C. Steel
D. None of these
4 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:
A. Zero
B. Of smaller magnitude
C. Of larger magnitude
D. Sometimes B, sometimes C
5 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
6 Referring to above figure, current in the coil P grows from zero to its maximum value:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. All of above
7 A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:
A. The coil is destroyed
B. The coil is Rotated
C. The coil is neither destroyed nor rotated
D. Both (A) and (B)
8 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
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 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

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