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

The induced current in a conductor depends upon

Question # 2

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

Question # 3

The phenomenon of generation of induced emf is called:

Question # 4

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

Question # 5

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

Question # 6

Michael Faraday and Joseph Henry belong respectively to

Question # 7

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

Question # 8

Lenz's law is the consequence of

Question # 9

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

Question # 10

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

Question # 11

The phenomenon of generation of induced emf is called

Question # 12

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

Question # 13

The magnitude of induced emf depends upon the:

Question # 14

The induced current in a conductor depends upon:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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:
A. Also 20º

B. 70º

C. 90º

D. 180º
2 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
3 Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:
A. 45 V
B. 15 V
C. 90 V
D. 300 V
4 The current produced by moving a loop of a wire across a magnetic field is called:
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
5 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
6 An induced current can be produced by
A. Constant magnetic field
B. Changing magnetic field
C. Varying electric field
D. Constant electric field
7 The rate change of area expressed is expressed in:
A. None of these
B. ms-1
C. m2s-2
D. ms-2
8

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
9 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
10 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

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