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

The work is stored in the inductor as

Question # 2

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

Question # 3

The induced current in the loop can be increased by:

Question # 4

Lenz's law is the consequence of

Question # 5

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

Question # 6

When a conductoris moved across a magnetic field:

Question # 7

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

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 induced current in the loop can be Increased by

Question # 10

The induced current is a conductor depends upon:

Question # 11

An induced current can be produced by

Question # 12

An induced current can be produced by:

Question # 13

The change of magnetic flux through a circuit will produce

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
4 Referring to above figure, due to change in current in the coil P, the change in magnetic flux:
A. Is associated with coil P
B. Is associated with coil S
C. Causes an induced current is coil S
D. All of these
5 Which of the following is most suitable as the core of transformer
A. Soft iron
B. Alinco
C. Steel
D. None of these
6 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
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 phenomenon of generation of induced emf is called:
A. Electrostatic induced
B. Magnetic induced
C. Electromagnetic induced
D. Electric induced
9 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
10 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

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