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

An induced current can be produced by:

Question # 2

When the conductor moved across a magnetic field:

Question # 3

In magnet-coil experiment, emf can be produced by

Question # 4

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

Question # 5

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

Question # 6

Back emf is produced due to

Question # 7

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?

Question # 8

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

Question # 9

The practical application of the phenomenon of Mutual induction is

Question # 10

Which of the following is most suitable as the core of transformer

Question # 11

The induced current in a conductor depends upon

Question # 12

The SI unit of magnetic induction is

Question # 13

The Phenomenon of generation of induced emf is called

Question # 14

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

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 The induced current in the loop can be increased by:
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All above
2 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
3 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
4 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
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 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
7 The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called
A. Mutual induction
B. Mutual inductance
C. Capacitance
D. Self inductance
8 When the conductor moved across a magnetic field:
A. Emf induced is similar to that of a battery

B. Emf induced gives rise to induced current

C. An emf induced across its ends

D. All are correct
9 When a conductoris moved across a magnetic field:
A. Emf induced its similar to that of a battery
B. Emf induced gives rise to induced current
C. An emf is induced across its ends
D. All are correct
10 The product of induced current and the resistance of the wire through which the current is passing is called:
A. Electromagnetic induction
B. induced emf
C. Induced current
D. Self induced

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