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

The induced current in the loop can be Increased by

Question # 2

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

Question # 3

Michael Faraday and Joseph Henry belong respectively to

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Eddy current is produced when:

Question # 11

When a conductoris moved across a magnetic field:

Question # 12

Self inducede e.m.f. is also called

Question # 13

The work is stored in the inductor as

Question # 14

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 # 15

For inducting emf in a coil the basic requirement is that:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 When a conductor moved with its length parallel to the lines of magnetic fled:
A. An emf is induced across its ends
B. Emf induced is similar to that of a battery
C. Emf passes through the conductor
D. Both A and B
2 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?
A. 2 H
B. 3 H
C. 1/2 H
D. Zero
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 current produced by moving a loop of a wire across a magnetic field is called:
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
5 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
6 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
7 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
8 In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
A. Both A and C
B. Induced emf
C. Both A and B
D. Motion emf
9 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
10 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

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