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

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

Question # 2

An induced current can be produced by:

Question # 3

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

Question # 4

Back emf is produced due to

Question # 5

The rate change of area expressed is expressed in:

Question # 6

The induced current in a conductor depends upon:

Question # 7

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

Question # 8

The induced current in the loop can be increased by:

Question # 9

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

Question # 10

The SI unit of magnetic induction is

Question # 11

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

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 induced current is produced in the coil when:

Question # 14

An emf is set up in a conductor when it

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 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
2 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
3 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
4 Micheal Faraday and joseph Henry belong respectively to:
A. USA and England
B. England and France
C. England and USA
D. USA and France
5 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
6 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
7 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge
8 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:
A. Also 20º

B. 70º

C. 90º

D. 180º
9 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
10 The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called
A. Mutual induction
B. Mutual inductance
C. Capacitance
D. Self inductance

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