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

Question # 2

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

Question # 3

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

Question # 4

Motional emf is called motional:

Question # 5

In magnet-coil experiment, emf can be produced by

Question # 6

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 # 7

An emf is set up in a conductor when it:

Question # 8

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

Question # 9

An induced current can be produced by:

Question # 10

Which of the following quantities remain constant in step up transformer?

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Question # 15

The rate change of area expressed is expressed in:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 When there is no relative motion between the magnet and coil, the galvanometer indicated
A. No current in the circuit
B. An increasing current
C. A decreasing current
D. A constant current
4 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
5 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
6 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
7 Referring to above figure, a changing current in coil P can be produced:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. With the help of rheostat
D. All of these
8 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)
9 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
10 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

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