Question # 1

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

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

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

Current passing through the coil of galvanometer

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CO/BAN

CoN /BA

NAB/CO

AN/BCO

NIBA =

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cθ

θ/c

c²θ

c²/θ

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

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Brightness of screen of CRO controlled by

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Grid

Filament

Anode

Cathode

The unit of Magnetic flux is called.

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weber

weber/m²

NM^-1A^-1

None of above

The unit of magnetic induction B is

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Coulomb

Ampere

Coulomb/ampere

Weber/m²

___ is correct relation.

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IT = 10^-4G

IT = 10⁴ G

IT = 10² G

IT = 10^-2 G

For a current carrying solenoid the term 'n' has unit as.

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No unit

m^-1

m^-2

m-3

The SI unit of magnetic permeability is.

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WbA-1m-1

Wbm-2

WbmA-1

WbAm-1

The magnetic flux will be max, For an angle of:

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0°

60°

90°

180°

Useful device to measure resistance, current and voltage is an electronic instrument called.

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Volt meter

Ammeter

Ohmmeter

Digital Multimeter

In order to increase sensitivity of galvanometer the value of C may be

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Increase

Decrease

Neither increase nor decrease

Remain same

A sensitive galvanometer is

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Unstable

Stable

Moderate

Both B and C

The dimensions of magnetic flux are

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M¹L^-2T¹A¹

MLT^-2A^-1

ML²T²A^-1

ML²T^-2A^-1

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

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