Question # 1

Ammeter is used to measure

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voltage

resistance

voltage and current

current

The working of galvanometer depends upon torque exerted on a current carrying coil in

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magnetic field

electric field

gravitational field

nuclear field

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m²The force on the wire is

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5N

4N

1.5N

6N

A voltmeter is used to measure the

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potential difference

current

temperature

resistance

A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is

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Zero

10⁵m

10^-10N

10⁸N

A field is uniform and much stronger:

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Inside a long solenoid

Outside a long solenoid

At the end of a long solenoid

At the central point of long solenoid

None of these

In a moving coil galvanometer, the deflecting couple depends upon

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area of the coil

number of turns of coil

value of magnetic field

all of the above

In the expression of force experienced by electron, the direction of both v and B are

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parallel

zero

perpendicular

none of them

Method "lamp and scale arrangement" used to measure the

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angle of deflection

restoring torque

magnetic field strength

current

A shunt resistance parallel to the galvanometer is used to convert it into

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avometer

millimeter

voltmeter

none of these

Charge to mass ratio (e/m) of an electron is given by the relation

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e/m = 2V/Br²

e/m = 2V/B²r

e/m = 2V/B²r²

e/m = V/2B²r²

The field around a moving charge is called

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magnetic field

conservative field

non-conservative field

none of these

The angle of deflection of coil can be measured by the

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one method

three method

two method

none of these

A current carrying conductor sets up its own:

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Electric field

Nuclear field

Magnetic field

Both (A) and (C)

All of these

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

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Thumb

Curled fingers

Middle finger

Arm of right hand

None of these

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

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0

1

0.5

-1

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