ECAT Pre Computer Science Chapter 15 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

Try The MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

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ECAT Physics Chapter 15 Electromagnetic Induction

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Question # 1

The SI unit of magnetic induction is

Question # 2

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

Question # 3

An induced current can be produced by:

Question # 4

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 # 5

An emf is set up in a conductor when it:

Question # 6

When a conductoris moved across a magnetic field:

Question # 7

A.C. can be measure with the help of

Question # 8

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

Question # 9

Split rings act as

Question # 10

Which of the following quantities remain constant in step up transformer?

Question # 11

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

Question # 12

When the conductor moved across a magnetic field:

Question # 13

Lens's law deals with the

Question # 14

Motional emf is called motional:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Micheal Faraday and joseph Henry belong respectively to:
A. USA and England
B. England and France
C. England and USA
D. USA and France
2 The induced emf in a coil is proportional to:
A. Magnetic flux through a coil
B. Rate of change of magnetic flux through the coil
C. Area of the coil
D. Product of magnetic flux and area of the coil
3 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
4 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
5 When there is no relative motion between the magnet and coil, the galvanometer indicates:
A. No current in circuit
B. An increasing current
C. A decreasing current
D. Either B or C
6 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
7 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
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 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge
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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