ECAT Pre Engineering Physics Chapter 15 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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

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Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Question # 1

What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10-2Wb, and change in current is 0.01 A?

Question # 2

The product of induced current and the resistance of the wire through which the current is passing is called:

Question # 3

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

Question # 4

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

Question # 5

The magnitude of induced emf depends upon the

Question # 6

Transformer is used to

Question # 7

The rate change of area expressed is expressed in:

Question # 8

Lens's law deals with the

Question # 9

Eddy current is produced when:

Question # 10

Michael Faraday and Joseph Henry belong respectively to

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

A metal road of length 1m is moving at a speed of 1 ms-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:

Question # 15

Self inducede e.m.f. is also called

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The product of induced current and the resistance of the wire through which the current is passing is called:
A. Electromagnetic induction
B. induced emf
C. Induced current
D. Self induced
2 A metal road of length 1m is moving at a speed of 1 ms-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:
A. 0.25 N
B. 0.25 V
C. 2.5 V
D. 2.5 N
3 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
4 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
5 An emf is set up in a conductor when it:
A. is kept in a magnetic field
B. is kept in a electric field
C. Move across a magnetic field
D. Both (A) and (B)
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 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
8 Referring to above figure, current in coil P falls from its maximum value to zero
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
9 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
10 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)

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