Question # 1

In current carrying long solenoid the magnetic field produced does not depend upon.

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The radius of solenoid

Number of turns per unit length

Current flowing through solenoid

All of the above

The effective way to increase the sensitivity of moving coil galvanometer is.

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Increase the area of coil

Increase the number of turn

Increase the magnetic field

Increase the value of constant C

The force on a charge particle moving parallel to magnetic field is:

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Maximum

Minimum

Zero

None of these

The anodes in cathode ray oscilloscope.

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Control number of waves

Control brightness of sept formed

Accelerate as well as focus beam

Negative potential w.r.t to chithode

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 unit of permiability of free space is:

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T.m/A

T.m²/A

T.m/A²

None of these

The galvanometer can be made sensitive by making the factor BAN/C

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Large

Small

Constant

Zero

A sensitive galvanometer is

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Unstable

Stable

Moderate

Both B and C

Which one has the least resistance.

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Galvanometer

Ammeter

Ohm meter

Volta meter

The SI unit of E is NC-1 and that of B is Na-1 m-1 then the unit of E/B is.

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ms-2

ms

ms^-1

m-1s-1

Magnetic lines of force are.

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Imaginary

Real

Perpendicular

In phase with electric lines of force

Ampere's law is applicable to:

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Circular path

Rectangular path

To any closed path

Nonwe of these

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

Weber is the unit of

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Magnetic flux

Permeability

magnetic force

None of above

The field is strong and uniform.

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Inside the solenoid

Surrounding of solenoid externally

Perpendicular to solenoid

All of above

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 battery is used in

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ohmmeter

Ammeter

Galvanometer

Voltemeter

The name of the scientist who noted that a compass needle was deflected when placed near the current carrying conductor

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Henry

Faraday

Coloumb

Oersted

In CRO, the output waveform of time base generator is

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Circular

Square

Sinusoidal

Saw-toothed

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

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Remain constant

Increases

Decreases

Increases then decreases

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

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