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 induced current is a conductor depends upon:

Question # 2

An induced current can be produced by:

Question # 3

The direction of induced current is always so as to oppose the cause which produces it. This is

Question # 4

Micheal Faraday and joseph Henry belong respectively to:

Question # 5

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:

Question # 6

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 # 7

An induced current can be produced by:

Question # 8

Transformer is used to

Question # 9

The magnitude of induced emf depends upon the

Question # 10

Faraday's law of electromagnetic induction has been used in the construction of:

Question # 11

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 # 12

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

Question # 13

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

Question # 14

The phenomenon of generation of induced emf is called

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
2 When the conductor moved across a magnetic field:
A. Emf induced is similar to that of a battery

B. Emf induced gives rise to induced current

C. An emf induced across its ends

D. All are correct
3 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
4 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
5 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
6 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
7 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
8 An emf is set up in a conductor when it:
A. is kept in a magnetic field
B. is kept in a electric field
C. Move across a magnetic field
D. Both (A) and (B)
9 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
10 Micheal Faraday and joseph Henry belong respectively to:
A. USA and England
B. England and France
C. England and USA
D. USA and France

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