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

An induced current can be produced by:

Question # 2

The rate change of area expressed is expressed in:

Question # 3

A.C. can be measure with the help of

Question # 4

Back emf is produced due to

Question # 5

The change of magnetic flux through a circuit will produce

Question # 6

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

Question # 7

Lens's law deals with the

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Referring to above figure, a changing current in coil P can be produced:

Question # 12

Split rings act as

Question # 13

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 # 14

The unit of induced emf is:

Question # 15

Micheal Faraday and joseph Henry belong respectively to:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Referring to above figure, a changing current in coil P can be produced:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. With the help of rheostat
D. All of these
2 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
3 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
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 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
6 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
7 An induced current can be produced by
A. Constant magnetic field
B. Changing magnetic field
C. Varying electric field
D. Constant electric field
8 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
9 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
10 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:
A. Zero
B. Of smaller magnitude
C. Of larger magnitude
D. Sometimes B, sometimes C

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