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 current carrying conductor experience maximum magnetic force in a uniform magnetic field when it is placed.

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Perpendicular to field

Parallel to field

At an angle of 60 ^o to the field

None of these

Shunt resistance is

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Low resistance

Zero resistance

High resistance

Impedance

Magnetic induction can be measured in units of.

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Tesla

Gauss

Weber/m2

All of the above

Which one of the following resistance is used to convert a Galvanometer into an ammeter.

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High resistance

Low resistance in series with galvanometer

Shunt

High resistance in series with galvanometer

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

In order to measure potential difference voltmeter is always connected in.

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Series

Parallel

Both a and b

Neither in series nor in parallel

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

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Maximum

Minimum

Zero

None of these

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

The SI Unit of magnetic induction is.

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Weber

Tesla

Gauss

Newton

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

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Anode

Cathode

Grid

Deflecting plates

The unit of Magnetic flux is called.

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weber

weber/m²

NM^-1A^-1

None of above

A dot represents the direction of magnetic field.

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Out of page

Into the page

Tangent to page

Parallels to page

The value of e/m is smallest for

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Proton

Electron

Beta particle

Positron

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

The acceleration of an electron of mass m and charge e, moving with uniform speed v at right angles to a magnetic field of flux density B, is given by

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Bevm

Weber is the unit of

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Magnetic flux

Permeability

magnetic force

None of above

One weber is equal to:

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N.A ²/m

N.m²/A

N.A/m

N.m/A

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