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

Question # 2

In magnet-coil experiment, emf can be produced by:

Question # 3

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

Question # 4

For inducting emf in a coil the basic requirement is that:

Question # 5

The SI unit of magnetic induction is

Question # 6

The device in which induced emf is statically induced emf is:

Question # 7

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

Question # 8

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

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

Question # 11

An induced current can be produced by:

Question # 12

The work is stored in the inductor as

Question # 13

An induced current can be produced by

Question # 14

The current produced by moving a loop of wire across a magnetic field is called:

Question # 15

The induced current in the loop can be increased by:

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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 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
3 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:
A. 0.2 henry
B. 0.1 henry
C. 0.8 henry
D. 0.04 henry
4 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
5 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
6 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
7 When a conductor is moved across a magnetic field, the redistribution of charge sets up:
A. Magnetic field
B. Electrostatic field
C. Electromagnetic field
D. All of these
8 An emf is set up in a conductor when it:
A. Is kept in a magnetic field
B. Is kept in an electric field
C. Moves across a magnetic field
D. Both A and B
9 In magnet-coil experiment, emf can be produced by:
A. Keeping the coil stationary and moving the magnet
B. Keeping the magnet stationary and moving the coil
C. Relative motion of the loop and magnet
D. Any one of above
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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