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

00:00
Question # 1

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

Question # 2

The Phenomenon of generation of induced emf is called

Question # 3

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

Question # 4

The practical application of the phenomenon of Mutual induction is

Question # 5

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

Question # 6

The magnitude of induced emf depends upon the

Question # 7

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

Question # 8

When a conductoris moved across a magnetic field:

Question # 9

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

Question # 10

The induced current in a conductor depends upon:

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Lens's law deals with the

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
2 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
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
A. Mutual induction
B. Mutual inductance
C. Capacitance
D. Self inductance
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 work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
6 Referring to above figure, current in coil P falls from its maximum value to zero:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
7 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
8 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
9 When a conductor is moved across a magnetic field, the redistribution of charge sets up:
A. Magnetic field
B. Electrostatic field
C. Electromagnetic field
D. All of these
10 The rate change of area expressed is expressed in:
A. None of these
B. ms-1
C. m2s-2
D. ms-2

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