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

Question # 2

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

Question # 3

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

Question # 4

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 5

An induced current can be produced by

Question # 6

The unit of induced emf is:

Question # 7

Micheal Faraday and joseph Henry belong respectively to:

Question # 8

When a conductor moved with its length parallel to the lines of magnetic fled:

Question # 9

The rate change of area expressed is expressed in:

Question # 10

When there is no relative motion between the magnet and coil, the galvanometer indicates:

Question # 11

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

Question # 12

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

Question # 13

Lenz's law is the consequence of

Question # 14

An induced current can be produced by:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 For inducting emf in a coil the basic requirement is that:
A. Flux should link the coil
B. Change in flux should link the coil
C. Coil should form a closed loop
D. Both B and C are true
2 A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:
A. The coil is distorted
B. The coil is rotated
C. The coil is neither distorted nor rotated
D. Both A and B
3 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
4 The SI unit of magnetic induction is
A. Weber
B. Weber/meter
C. Henry
D. Tesla
5 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
6 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
7 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)
8 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
9 Referring to above figure, due to change in current in the coil P, the change in magnetic flux:
A. Is associated with coil P
B. Is associated with coil S
C. Causes an induced current is coil S
D. All of these
10 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

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