ECAT Pre Computer Science Chapter 15 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

Try The MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

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ECAT Physics 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

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

Question # 3

The motional e.m.f depends upon the

Question # 4

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

Question # 5

An induced current can be produced by:

Question # 6

An emf is set up in a conductor when it:

Question # 7

The change of magnetic flux through a circuit will produce

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

Question # 12

When the conductor moved across a magnetic field:

Question # 13

The magnitude of induced emf depends upon the:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 An emf is set up in a conductor when it:
A. is kept in a magnetic field
B. is kept in a electric field
C. Move across a magnetic field
D. Both (A) and (B)
2 Referring to above figure, a changing current in coil P can be produced:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. With the help of rheostat
D. All of these
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:
A. Also 20º

B. 70º

C. 90º

D. 180º
4 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
5 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
6 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
7

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
8 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
9 A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:
A. The coil is distorted
B. The coil is rotated
C. The coil is neither distorted nor rotated
D. Both A and B
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:
A. Zero
B. Of smaller magnitude
C. Of larger magnitude
D. Sometimes B, sometimes C

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