Question # 1

SI unit of capacitance is:

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Joule

Volt

Watt

Farad

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attracts a neutral particle

Repels a neutral particle

Electric field lines of force were first introduced by:

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Ampere

Farady

Fleming

Coulomb

The 1st practical electric battery is known as:

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Voltaic

Pile

Voltaic pile

Voltaic cell

One coulomb is equal to charge of ________ electrons.

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6.25 x 10^-19

6.25 x 10¹⁹

6.25 x 10¹⁸

6.25 x 10^-18

Electric intensity is a quantity.

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Scalar

Vector

Base

None of these

The frequency of silent whistle is:

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20,000 Hz – 25000Hz

2000 Hz – 2500Hz

200 KHz – 2000 Hz

25000 KHz

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attracts a neutral charge

Repels a neutral chage

1 Pico Farad is equal to:

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10^-9F

10^-12F

10¹²F

10^-6F

If a charged body is brought near a negatively charged electroscope and the leaves of electroscope diverge, then the body is:

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Positively charged

Negatively charged

Neutral

None of these

In the presence of a charged body, an insulated conductor develops positive charge at one end and negative charge at the other end, this i- called:

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Electrostatics

Electrostatic induction

Magnetism

Electromagnetic induction

How many tubes or electron guns used in a colour television set:

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Two

Four

Five

Three

The intensity level of train siren is:

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150 dB

100 dB

130 dB

120 dB

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