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

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

Question # 2

An emf is set up in a conductor when it

Question # 3

The motional e.m.f depends upon the

Question # 4

The magnitude of induced emf depends upon the

Question # 5

An emf is set up in a conductor when it:

Question # 6

Back emf is produced due to

Question # 7

In magnet-coil experiment, emf can be produced by

Question # 8

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

Question # 9

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

Question # 10

Split rings act as

Question # 11

Self inducede e.m.f. is also called

Question # 12

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 # 13

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 14

Lenz's law is the consequence of

Question # 15

Micheal Faraday and joseph Henry belong respectively to:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction
2 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
3 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
4 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
5 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
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 Referring to above figure, current in the coil P grows from zero to its maximum value:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. All of above
8 The current produced by moving a loop of a wire across a magnetic field is called:
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
9 The SI unit of magnetic induction is
A. Weber
B. Weber/meter
C. Henry
D. Tesla
10 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

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