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

Lenz's law is the consequence of

Question # 2

An emf is set up in a conductor when it

Question # 3

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

Question # 4

The induced current in the loop can be increased by:

Question # 5

The phenomenon of generation of induced emf is called:

Question # 6

An induced current can be produced by:

Question # 7

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

Question # 8

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

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

The law of electromagnetic induction is related to:

Question # 11

When the conductor moved across a magnetic field:

Question # 12

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

Question # 13

Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is:

Question # 14

A device which converts Electrical energy into mechanical energy is called as

Question # 15

An induced current can be produced by:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
3 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
4 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
5 An induced current can be produced by
A. Constant magnetic field
B. Changing magnetic field
C. Varying electric field
D. Constant electric field
6 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
7

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
8 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
9 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
10 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

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