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

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Question # 1

Transformer is used to

Question # 2

The unit of induced emf is:

Question # 3

The induced emf in a coil is proportional to:

Question # 4

Back emf is produced due to

Question # 5

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

Question # 6

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

Question # 7

Split rings act as

Question # 8

Eddy current is produced when:

Question # 9

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

Question # 10

The induced current in a conductor depends upon:

Question # 11

The induced current in the loop can be increased by:

Question # 12

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

Question # 13

The work is stored in the inductor as

Question # 14

When a conductoris moved across a magnetic field:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 A.C. can be measure with the help of
A. Nuclear effect
B. Magnetic effect
C. Chemical effect
D. Heating effect
2 When there is no relative motion between the magnet and coil, the galvanometer indicates:
A. No current in circuit
B. An increasing current
C. A decreasing current
D. Either B or C
3 The direction of induced current is always so as to oppose the cause which produces it. This is
A. Lenz's law
B. Ampere's law
C. Faraday's law
D. Coulomb's law
4 What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10-2Wb, and change in current is 0.01 A?
A. 2 H
B. 3 H
C. 1/2 H
D. Zero
5 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
6 The motional e.m.f depends upon the
A. Length of a conductor
B. Strength of a magnet
C. Speed of the conductor
D. All of the above
7 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
8 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
9 When there is no relative motion between the magnet and coil, the galvanometer indicated
A. No current in the circuit
B. An increasing current
C. A decreasing current
D. A constant current
10 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

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