Question # 1

When a charge is projected perpendicular to a uniform magnetic field, tis path is

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Spiral

Helix

Ellipse

Circular

A soft iron cylinder is placed inside coil galvanometer to:

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Make field circular and strong

Make field radial and weak

Make field radial and strong

All 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

The magnetic force is simply a

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Reflecting force

Deflecting force

Restoring force

Gravitational force

A photon while passing thorugh a magnetic field are deflected towards:

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North pole

South pole

Are ionized

None of these

The brightness of the spot of CRO screen is controlled by.

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Anode

Cathode

Grid

Deflecting plates

Magnetic lines of force are.

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Imaginary

Real

Perpendicular

In phase with electric lines of force

Brightness of screen of CRO controlled by

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Grid

Filament

Anode

Cathode

The sum of electric and magnetic force is called.

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Maxwell force

Lorentz force

Newton's force

Centripetal force

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

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Voltage

Current

Resistance

None

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 permeability of free space is measured in

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wb A/m

Am/wb

wb/Am

m/wbA

An AVO meter can also be called as.

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Digital multimeter

Digital voltmeter

Digital ammeter

Digital ohm meter

One weber is equal to:

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N.A ²/m

N.m²/A

N.A/m

N.m/A

The function of three anodes a C.R.O is

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To accelerate electrons only

To focus the electrons only

To control the brightness of spot on screen

To accelerate and focus the electrons

The e/m of a neutron is

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Less than electron

The same as electron

Zero

Greater than election

Ampere's law is applicable to:

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Circular path

Rectangular path

To any closed path

Nonwe of these

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

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Maximum

Minimum

Zero

None of these

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