Question # 1

Current passing through the coil of galvanometer

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CO/BAN

CoN /BA

NAB/CO

AN/BCO

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 SI Unit of magnetic induction is.

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Weber

Tesla

Gauss

Newton

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

Grid in cathode ray oscilloscope controls.

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Number of electron

Temperature of filament

Frequency of electron

Energy of electrons

The vector sum of electric force and magnetic force is called:

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Deflecting force

Lorentz force

Newton force

Faraday's force

Energy stored per uint volume inside a solenoid is called as

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energy density

Electric flux

Work

Volume charge density

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

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North pole

South pole

Are ionized

None of these

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

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

Magnetic flux density is measured in

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Weber

Weber/m2

Tesla -m

Gauss

Shunt resistance is

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Low resistance

Zero resistance

High resistance

Impedance

When charge particle enter perpendicular to magnetic field, the path followed by it is:

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A helix

A circle

Straight line

Ellipes

A device used for detection of current is called.

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Inductor

Voltmeter

Capacitor

Galvanometer

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

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

1 tesla =

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1 MAm^-1

1NA^-1m

1NA^-1m^-1

None of above

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