Question # 1

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

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Ammeter

Voltammeter

Ohmmeter

Multimeter

If a charge is at rest in a magnetic field then force on charge is

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Zero

Double

One fourth

Four times

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

Write the SI unit of magnetic flux.

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Tesla

Weber

Weber m-2

Tesla m2

The unit of Magnetic flux is called.

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weber

weber/m²

NM^-1A^-1

None of above

Cathode ray oscilloscope works by deflecting a beams

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Neutrons

Protons

Electrons

Positron

μ_∘(Ampere's constant) has value.

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4πx10^-7 WbA^-1m^-1

4πx10^-17 Wbm²

4πx10⁷ WbA^-1m^-1

4πx10-27 Wb/m²

Sensitivity of a galvanometer can be increased by

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Decreasing the value of torsional couple

Decreasing number of turns

Decreasing area of plane of coil

Decreasing magnetic field

CRO works by deflecting the beam of electron as they pass through

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Uniform magnetic field

Uniform electric field between two sets of parallel plates

Non-uniform magnetic field

None of these

Torque on a current carrying coil

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τ=IBA cos

τ = ILB sinα

τ = IBA sinα

τ = ILBcosα

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

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Remain constant

Increases

Decreases

Increases then decreases

To convert a galvanometer into a volt meter a high resistance is connected.

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In series

In parallel

In perpendicular

Along tangent

If the length and number of turns of a solenoid are doubled strength of magnetic field with.

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Be doubled

Become half

Not change

Be four time

Ampere's law is applicable to:

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Circular path

Rectangular path

To any closed path

Nonwe of these

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

The sensitivity of galvanometer is given by

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CAN/B

C/BAN

BAN/C

BN/CA

Current passing through the coil of galvanometer

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CO/BAN

CoN /BA

NAB/CO

AN/BCO

A charged particle having charge 'q' is moving at right angle to magnetic field. The quantity which varies is.

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Speed

Kinetic energy

Path of motion

angular velocity

A voltmeter is always connected in

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Parallel

Series

Perpendicular

Straight line

Energy stored per uint volume inside a solenoid is called as

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energy density

Electric flux

Work

Volume charge density

The SI Unit of magnetic induction is.

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Weber

Tesla

Gauss

Newton

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