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

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

Question # 2

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

Question # 3

The induced current in the loop can be increased by:

Question # 4

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

Question # 5

Lens's law deals with the

Question # 6

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

Question # 7

The practical application of the phenomenon of Mutual induction is

Question # 8

Which of the following is most suitable as the core of transformer

Question # 9

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 # 10

The induced current in the loop can be increased by:

Question # 11

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 12

Eddy current is produced when:

Question # 13

Michael Faraday and Joseph Henry belong respectively to

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The magnitude of induced emf depends upon the
A. Rate of decrease of magnetic field
B. Rate of change of magnetic field
C. Rate of increase of magnetic flux
D. Constancy of magnetic field
2 The induced current in a conductor depends upon
A. Resistance of the loop
B. Speed with which the conductor moves
C. Any of these
D. Both A and B
3 Eddy current is produced when:
A. A metal is kept in varying magnetic field
B. A metal is kept in steady magnetic field
C. A circular coil is placed in a steady magnetic field
D. A current is passed through a circular coil
4 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
5 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
6 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge
7 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 the coil
C. Relative motion of the loop and magnet
D. Any one of above
8 The rate change of area expressed is expressed in:
A. None of these
B. ms-1
C. m2s-2
D. ms-2
9 The SI unit of magnetic induction is
A. Weber
B. Weber/meter
C. Henry
D. Tesla
10 The induced current in the loop can be Increased by
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All above

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