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

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

Question # 2

An induced current can be produced by:

Question # 3

The unit of induced emf is:

Question # 4

The magnitude of induced emf depends upon the:

Question # 5

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

Question # 6

An induced current can be produced by

Question # 7

Motional emf is called motional:

Question # 8

An emf is set up in a conductor when it:

Question # 9

The induced current in the loop can be increased by:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Michael Faraday and Joseph Henry belong respectively to

Question # 15

The magnitude of induced emf depends upon the

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 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
4 For inducting emf in a coil the basic requirement is that:
A. Flux should link the coil
B. Change in flux should link the coil
C. Coil should form a closed loop
D. Both B and C are true
5 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
6 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
7 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
8 When a conductoris moved across a magnetic field:
A. Emf induced its similar to that of a battery
B. Emf induced gives rise to induced current
C. An emf is induced across its ends
D. All are correct
9 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
10 The induced emf in a coil is proportional to:
A. Magnetic flux through a coil
B. Rate of change of magnetic flux through the coil
C. Area of the coil
D. Product of magnetic flux and area of the coil

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