Question # 1

The magnitude of induced emf depends upon the:

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Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

The induced current in the loop can be Increased by

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both A and B

Split rings act as

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Vibrator

Resistor

Motor

Commulator

When the conductor moved across a magnetic field:

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Emf induced is similar to that of a battery

Emf induced gives rise to induced current

An emf induced across its ends

All are correct

None of these

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

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Direct current

Magnetic current

Alternating current

Induced current

None of these

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

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Of same magnitude in the same direction

Of different magnitude in the same direction

Of same magnitude but in opposite direction

Of different magnitude in the opposite direction

None of these

The induced current in a conductor depends upon:

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Resistance of the loop

Speed with which the conductor moves

Any of these

Both A and B

None of these

Michael Faraday and Joseph Henry belong respectively to

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USA and England

England and France

England and USA

USA and France

None of these

The phenomenon of generation of induced emf is called:

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Electrostatic induced

Magnetic induced

Electromagnetic induced

Electric induced

Both A and C

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

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Transformer

Generator

Motor

All of these

The law of electromagnetic induction is related to:

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Coulomb

Ampere

Faraday

Lenz

None of these

In magnet-coil experiment, emf can be produced by

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Keeping the coil stationary and moving the magnet

Keeping the magnet stationary and moving

Relative motion of the loop and magnet

Any one of above

All above

Micheal Faraday and joseph Henry belong respectively to:

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USA and England

England and France

England and USA

USA and France

None of these

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

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Galvanometer

Voltmeter

Electric motor

Electric genrator

Commutator

The motional e.m.f depends upon the

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Length of a conductor

Strength of a magnet

Speed of the conductor

All of the above

Lens's law deals with the

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Magnitude of induced current

Magnitude of induced e.m.f

Direction of induced e.m.f

Direction of induced current

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ECAT Physics Chapter 15 Electromagnetic Induction Online Test MCQs With Answers

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