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

Back emf is produced due to

Question # 2

The motional e.m.f depends upon the

Question # 3

The Phenomenon of generation of induced emf is called

Question # 4

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

Question # 5

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 # 6

A metal road of length 1m is moving at a speed of 1 ms-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:

Question # 7

When the conductor moved across a magnetic field:

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

An induced current can be produced by:

Question # 12

The unit of induced emf is:

Question # 13

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 # 14

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

Question # 15

The law of electromagnetic induction is related to:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The current produced by moving a loop of wire across a magnetic field is called
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
2 The law of electromagnetic induction is related to:
A. Coulomb
B. Ampere
C. Faraday
D. Lenz
3 A.C. can be measure with the help of
A. Nuclear effect
B. Magnetic effect
C. Chemical effect
D. Heating effect
4 Motional emf is called motional:
A. Electromagnetic force and is measured in newtons
B. Electromotive force and is measured in volt
C. Electromotive force and is measured in newtons
D. Electromagnetic force and is measured in volts
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 Which of the following is most suitable as the core of transformer
A. Soft iron
B. Alinco
C. Steel
D. None of these
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 The induced current in the loop can be increased by:
A. Using a strong magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All of above
9 The rate change of area expressed is expressed in:
A. None of these
B. ms-1
C. m2s-2
D. ms-2
10 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

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