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

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

Question # 2

An induced current can be produced by:

Question # 3

The device in which induced emf is statically induced emf is:

Question # 4

The Phenomenon of generation of induced emf is called

Question # 5

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

Question # 6


The magnitude of induced emf depends upon the:

Question # 7

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 # 8

When the conductor moved across a magnetic field:

Question # 9

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 # 10

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

Question # 11

An emf is set up in a conductor when it:

Question # 12

The induced current is a conductor depends upon:

Question # 13

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

Question # 14

The rate change of area expressed is expressed in:

Question # 15

The work is stored in the inductor as

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
A. Motion emf
B. Electrostatic emf
C. Induced emf
D. Both A and B
4 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
5 The motional e.m.f depends upon the
A. Length of a conductor
B. Strength of a magnet
C. Speed of the conductor
D. All of the above
6 Lens's law deals with the
A. Magnitude of induced current
B. Magnitude of induced e.m.f
C. Direction of induced e.m.f
D. Direction of induced current
7 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
8 Which of the following is most suitable as the core of transformer
A. Soft iron
B. Alinco
C. Steel
D. None of these
9 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
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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