Question # 1

If the number of turns become double but length remain same, then magnetic field in the solenoid become.

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Half

Double

Remain same

Zero

If a low resistance is connected parallel to a galvanometer then galvanometer is converted.

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Ammeter

Voltammeter

Ohmmeter

Multimeter

Magnetic flux density at a point due to current carrying coil is determined by

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Ampere's law

Faraday's law

Lenz's law

Gauss's law

A sensitive galvanometer is

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Unstable

Stable

Moderate

Both B and C

An ammeter is an electrical instrument which is used to measure.

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Voltage

Current

Resistance

None

Magnetism is related to:

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Stationary charges

Moving charges

Stationary & Movingcharges

Law of motion

One weber is equal to:

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N.A ²/m

N.m²/A

N.A/m

N.m/A

The sensitivity of galvanometer is given by

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CAN/B

C/BAN

BAN/C

BN/CA

An electron enters the magnetic field at right angle from left, B is into paper. The electron will be deflected.

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upward

To ward right

Down ward

Toward left

Torque on a current carrying coil

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τ=IBA cos

τ = ILB sinα

τ = IBA sinα

τ = ILBcosα

The field is strong and uniform.

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Inside the solenoid

Surrounding of solenoid externally

Perpendicular to solenoid

All of above

1 tesla =

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1 MAm^-1

1NA^-1m

1NA^-1m^-1

None of above

The conductor experience force, placed in magnetic above:

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Move towards weaker part of field

Move towards stronger part of field

Remains at rest

Move upwards in space

A Current flowing towards the reader is denoted by.

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Cross

a bracket

A dot

Positive sign

Write the SI unit of magnetic flux.

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Tesla

Weber

Weber m-2

Tesla m2

The unit of permiability of free space is:

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T.m/A

T.m²/A

T.m/A²

None of these

The SI unit of flux density is.

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NA-1 m2

NA-1 m-1

NAm-1

NA-1 m

Lorentz force means the force acting on a particle, which is

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Magnetic force only

Electric force only

Sum of electric and magnetic force

None of these

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