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 law of electromagnetic induction is related to:

Question # 2

Lens's law deals with the

Question # 3

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:

Question # 4

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

Question # 5

The induced current in a conductor depends upon:

Question # 6

An induced current can be produced by:

Question # 7

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

Question # 8

The induced current in the loop can be Increased by

Question # 9

An induced current can be produced by:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

The SI unit of magnetic induction is

Question # 14

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction
2 In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:
A. 0.2 henry
B. 0.1 henry
C. 0.8 henry
D. 0.04 henry
3 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
4 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
5 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
C. Relative motion of the loop and magnet
D. Any one of above
6 When a conductoris moved across a magnetic field:
A. Emf induced its similar to that of a battery
B. Emf induced gives rise to induced current
C. An emf is induced across its ends
D. All are correct
7 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
8 A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:
A. The coil is destroyed
B. The coil is Rotated
C. The coil is neither destroyed nor rotated
D. Both (A) and (B)
9 The practical application of the phenomenon of Mutual induction is
A. Transformers
B. Generator
C. Motor
D. All of these
10 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat

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