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

00:00
Question # 1

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

Question # 2

When the conductor moved across a magnetic field:

Question # 3

The induced current in the loop can be Increased by

Question # 4

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

Question # 5

Michael Faraday and Joseph Henry belong respectively to

Question # 6

The law of electromagnetic induction is related to:

Question # 7

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

Question # 8

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

Question # 9

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:

Question # 10

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

Question # 11

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

Question # 12

When a conductoris moved across a magnetic field:

Question # 13

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

Question # 14

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

Question # 15

Eddy current is produced when:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
2 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
3 Motional emf is called motional:
A. Electromagnetic force and is measured in newtons
B. Electromotive force and is measured in volt
C. Electromotive force and is measured in newtons
D. Electromagnetic force and is measured in volts
4 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
5 A.C. can be measure with the help of
A. Nuclear effect
B. Magnetic effect
C. Chemical effect
D. Heating effect
6 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
C. Relative motion of the loop and magnet
D. Any one of above
7 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
8 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
9 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:
A. 0.2 henry
B. 0.1 henry
C. 0.8 henry
D. 0.04 henry
10 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

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