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

Motional emf is called motional:

Question # 2

The work is stored in the inductor as

Question # 3

The induced current in the loop can be Increased by

Question # 4

Transformer is used to

Question # 5

The product of induced current and the resistance of the wire through which the current is passing is called:

Question # 6

Lenz's law is the consequence of

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 direction of induced current is always so as to oppose the cause which produces it. This is

Question # 9

The induced current in a conductor depends upon

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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 # 14

The magnitude of induced emf depends upon the

Question # 15

An induced current can be produced by:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
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 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
4 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
5 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
6 In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
A. Motion emf
B. Electrostatic emf
C. Induced emf
D. Both A and B
7 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)
8 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
9 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
10 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)

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