Question # 1

A positive charge is moving towards an observer, The direction of magnetic induction will be.

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Toward right

Anti clockwise

Clockwise

Toward left

Current passing through the coil of galvanometer

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CO/BAN

CoN /BA

NAB/CO

AN/BCO

The sensitivity of Galvanometer can be increased by:

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Increasing C/BAN factor

Decreasing C/BAN factor

Increasing angle θ

All of above

If an electron is prijected in a magnetic field with velocity V, it will experience a force

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Galvanometer is sensitive when C/BAN is

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zero

Large

small

Negative

A charged particle enters in a strong magnetic field its K.E.

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Remain constant

Increases

Decreases

Increases then decreases

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

The SI Unit of magnetic induction is.

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Weber

Tesla

Gauss

Newton

The field is strong and uniform.

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Inside the solenoid

Surrounding of solenoid externally

Perpendicular to solenoid

All of above

The torque in the coil can be increased by increasing:

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No. of turns

Current and magnetic field

Area of coil

All of the above

A device used for detection of current is called.

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Inductor

Voltmeter

Capacitor

Galvanometer

Magnetic flux density is measured in

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Weber

Weber/m2

Tesla -m

Gauss

If the length of solenoid is doubled but N same, B inside the solenoid becomes.

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Half

Doubled

One fourth

Four times

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

Magnetic lines of force are.

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Imaginary

Real

Perpendicular

In phase with electric lines of force

The sensitivity of galvanometer is given by

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CAN/B

C/BAN

BAN/C

BN/CA

The permeability of free space is measured in

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wb A/m

Am/wb

wb/Am

m/wbA

1 tesla =

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1 MAm^-1

1NA^-1m

1NA^-1m^-1

None of above

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