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

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Question # 2

A device which converts Electrical energy into mechanical energy is called as

Question # 3

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

Question # 4

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

Question # 5

Eddy current is produced when:

Question # 6

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

Question # 7

In magnet-coil experiment, emf can be produced by

Question # 8

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

Question # 9

The law of electromagnetic induction is related to:

Question # 10

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

Question # 11

The rate change of area expressed is expressed in:

Question # 12

The induced emf in a coil is proportional to:

Question # 13

The practical application of the phenomenon of Mutual induction is

Question # 14

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 # 15

An emf is set up in a conductor when it:

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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 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
3 Referring to above figure, current in the coil P grows from zero to its maximum value:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. All of above
4 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
5 The work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
6 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction
7 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
8 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
9 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
10 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

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