Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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

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

Question # 2

The practical application of the phenomenon of Mutual induction is

Question # 3

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

Question # 4

An induced current can be produced by:

Question # 5

The induced current in a conductor depends upon

Question # 6

Micheal Faraday and joseph Henry belong respectively to:

Question # 7

An induced current can be produced by:

Question # 8

The induced emf in a coil is proportional to:

Question # 9

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

Question # 10

Referring to above figure, a changing current in coil P can be produced:

Question # 11

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

Question # 12

The law of electromagnetic induction is related to:

Question # 13

In magnet-coil experiment, emf can be produced by

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
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 Micheal Faraday and joseph Henry belong respectively to:
A. USA and England
B. England and France
C. England and USA
D. USA and France
4 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
5 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
6 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
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 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 Lens's law deals with the
A. Magnitude of induced current
B. Magnitude of induced e.m.f
C. Direction of induced e.m.f
D. Direction of induced current
10 The practical application of the phenomenon of Mutual induction is
A. Transformers
B. Generator
C. Motor
D. All of these

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