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

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

Question # 2

The rate change of area expressed is expressed in:

Question # 3

The unit of induced emf is:

Question # 4

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

Question # 5

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 # 6


The magnitude of induced emf depends upon the:

Question # 7

Split rings act as

Question # 8

The motional e.m.f depends upon the

Question # 9

Self inducede e.m.f. is also called

Question # 10

When a conductoris moved across a magnetic field:

Question # 11

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

Question # 12

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

Question # 13

Which of the following quantities remain constant in step up transformer?

Question # 14

The magnitude of induced emf depends upon the:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
2 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
3 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
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 Referring to above figure, a changing current in coil P can be produced:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. With the help of rheostat
D. All of these
6 In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
A. Both A and C
B. Induced emf
C. Both A and B
D. Motion emf
7 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
8 A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:
A. Zero
B. Of smaller magnitude
C. Of larger magnitude
D. Sometimes B, sometimes C
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:
A. 0.25 N
B. 0.25 V
C. 2.5 V
D. 2.5 N
10 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction

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