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

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

Question # 2

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

Question # 3

The induced current in a conductor depends upon

Question # 4

Self inducede e.m.f. is also called

Question # 5

The induced current in a conductor depends upon:

Question # 6

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 7

The phenomenon of generation of induced emf is called:

Question # 8

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

Question # 9

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 # 10

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

Question # 11

Lens's law deals with the

Question # 12

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

Question # 13

An emf is set up in a conductor when it:

Question # 14

Referring to above figure, a changing current in coil P can be produced:

Question # 15

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

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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 ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called
A. Mutual induction
B. Mutual inductance
C. Capacitance
D. Self inductance
3 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
4 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)
5 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
6 The direction of induced current is always so as to oppose the cause which produces it. This is
A. Lenz's law
B. Ampere's law
C. Faraday's law
D. Coulomb's law
7 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
8 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
9 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
10 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator

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