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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

The rate change of area expressed is expressed in:

Question # 7

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

Question # 8

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

Question # 9

The work is stored in the inductor as

Question # 10

Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current

Question # 11

In magnet-coil experiment, emf can be produced by:

Question # 12

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

Question # 13

Self inducede e.m.f. is also called

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The induced current is 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)
2 The current produced by moving a loop of wire across a magnetic field is called:
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
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 The current produced by moving a loop of a wire across a magnetic field is called:
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
5 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
6 The induced emf in a coil is proportional to:
A. Magnetic flux through a coil
B. Rate of change of magnetic flux through the coil
C. Area of the coil
D. Product of magnetic flux and area of the coil
7 An emf is set up in a conductor when it:
A. is kept in a magnetic field
B. is kept in a electric field
C. Move across a magnetic field
D. Both (A) and (B)
8 Self inducede e.m.f. is also called
A. Motional e.m.f.
B. Thermistor
C. Electrostatic induction
D. Back e.m.f
9 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
10 Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:
A. 45 V
B. 15 V
C. 90 V
D. 300 V

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