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

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 # 2

The induced emf in a coil is proportional to:

Question # 3

When there is no relative motion between the magnet and coil, the galvanometer indicated

Question # 4

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

Question # 5

An induced current can be produced by:

Question # 6

The law of electromagnetic induction is related to:

Question # 7

Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:

Question # 8

The magnitude of induced emf depends upon the

Question # 9

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

Question # 10

A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:

Question # 11

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

Question # 12

A.C. can be measure with the help of

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The induced current in 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
2 The current produced by moving a loop of wire across a magnetic field is called
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
3 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 and induced current in coil S
D. All of these
4 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:
A. 0.25 N
B. 0.25 V
C. 2.5 V
D. 2.5 N
5 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
6 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
7 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
8 The work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
9 A.C. can be measure with the help of
A. Nuclear effect
B. Magnetic effect
C. Chemical effect
D. Heating effect
10 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge

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