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

When a conductoris moved across a magnetic field:

Question # 2

The magnitude of induced emf depends upon the

Question # 3

Split rings act as

Question # 4

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

Question # 5

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:

Question # 6

The rate change of area expressed is expressed in:

Question # 7

An emf is set up in a conductor when it:

Question # 8

The SI unit of magnetic induction is

Question # 9

The law of electromagnetic induction is related to:

Question # 10

Faraday's law of electromagnetic induction has been used in the construction of:

Question # 11

An emf is set up in a conductor when it:

Question # 12

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

Question # 13

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

Question # 14

An induced current can be produced by:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 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
4 Micheal Faraday and joseph Henry belong respectively to:
A. USA and England
B. England and France
C. England and USA
D. USA and France
5 The induced current in the loop can be increased by:
A. Using a strong magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All of above
6 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
7 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
8 The law of electromagnetic induction is related to:
A. Coulomb
B. Ampere
C. Faraday
D. Lenz
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 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C

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