Question # 1

The potential difference between tow paints in a circuit is measured by:

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Galvanometer

Ammeter

Voltmeter

Multi - meter

The working principle of transformer:

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Electromagnetic conduction

Electrostatic induction

Electric charge

Neutralization

V_s / V_{p is equal to.}

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Vp / Vs

Np / Ns

Ns / Np

None

The potential of the neutral wire is.

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Zero

+220 volts

220 volts

Changing

The device used for turning a circuit ON or OFF is.

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Switch

Fuse

Circuit breaker

Earth wire

The SI unit of capacitance is:

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Farad

Ampere

Ohm

Newton

1 m A is equal to.

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10^-3A

10^-6A

10^-2 A

10^-8A

Which circuits carry currents to the lights heaters and other appliances:

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parallel circuits

series circuits

common circuits

All of the above

The Si unit of current is:

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Ohm

Ampere

Kilowatt

Coulomb

The constant in Ohm's law is.

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Current

Resistance

Potential difference

Charge

Voltmeter is used to.

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Measure current

Measure potential difference

Measure voltage

Both a and b

According to ohm's law , current and potential difference are:

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Inversely proportional

Directly proportional

Equal

Non of the above

The unit of current in System International is.

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Ampere

Volt

Ohm

Newton

The SI unit of resistence.

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Ampere

Volt

Hertz

Ohm

Resistance ' R" is equal to.

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I

V

V/I

I/V

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