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

The induced current in the loop can be increased by:

Question # 3

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 # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The induced current in the loop can be increased by:

Question # 9

In magnet-coil experiment, emf can be produced by

Question # 10

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

Question # 11

Lenz's law is the consequence of

Question # 12

When a conductor moved with its length parallel to the lines of magnetic fled:

Question # 13

The SI unit of magnetic induction is

Question # 14

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

Question # 15

A metal road of length 1m is moving at a speed of 1 ms-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:

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ECAT Class Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
2 An induced current can be produced by
A. Constant magnetic field
B. Changing magnetic field
C. Varying electric field
D. Constant electric field
3 Motional emf is called motional:
A. Electromagnetic force and is measured in newtons
B. Electromotive force and is measured in volt
C. Electromotive force and is measured in newtons
D. Electromagnetic force and is measured in volts
4 Referring to above figure, due to change in current in the coil P, the change in magnetic flux:
A. Is associated with coil P
B. Is associated with coil S
C. Causes an induced current is coil S
D. All of these
5 The induced current is 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)
6 When there is no relative motion between the magnet and coil, the galvanometer indicated
A. No current in the circuit
B. An increasing current
C. A decreasing current
D. A constant current
7 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
8 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
9 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
10
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

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