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

00:00
Question # 1

The phenomenon of generation of induced emf is called:

Question # 2

The practical application of the phenomenon of Mutual induction is

Question # 3

For inducting emf in a coil the basic requirement is that:

Question # 4

The induced current in a conductor depends upon:

Question # 5

The induced current in the loop can be increased by:

Question # 6

Motional emf is called motional:

Question # 7

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

Question # 8

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

Question # 9


The magnitude of induced emf depends upon the:

Question # 10

The magnitude of induced emf depends upon the:

Question # 11

When the conductor moved across a magnetic field:

Question # 12

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

Question # 13

An induced current can be produced by:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2
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
3 The direction of induced current is always so as to oppose the cause which produces it. This is
A. Lenz's law
B. Ampere's law
C. Faraday's law
D. Coulomb's law
4 Referring to above figure, current in coil P falls from its maximum value to zero:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
5 When a conductor moved with its length parallel to the lines of magnetic fled:
A. An emf is induced across its ends
B. Emf induced is similar to that of a battery
C. Emf passes through the conductor
D. Both A and B
6 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
7 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
8 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
9 A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:
A. The coil is destroyed
B. The coil is Rotated
C. The coil is neither destroyed nor rotated
D. Both (A) and (B)
10 The Phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction

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