Question # 1

The SI unit of resistence.

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Ampere

Volt

Hertz

Ohm

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

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Switch

Fuse

Circuit breaker

Earth wire

The potential of the neutral wire is.

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Zero

+220 volts

220 volts

Changing

Which of the following is an neutral particle?

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Electron

Proton

Neutron

Alpha particle

A device that decreases or increases the A.C voltage:

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Transformer

Ammeter

Voltmeter

Fuse

Voltmeter is used to.

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Measure current

Measure potential difference

Measure voltage

Both a and b

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

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Galvanometer

Ammeter

Voltmeter

Multi - meter

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

Resistance ' R" is equal to.

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I

V

V/I

I/V

The Si unit of current is:

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Ohm

Ampere

Kilowatt

Coulomb

V_s / V_{p is equal to.}

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Vp / Vs

Np / Ns

Ns / Np

None

The instrument that measures current is called.

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Voltmeter

Circuit breaker

Ammeter

Switch

The unit of current in System International is.

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Ampere

Volt

Ohm

Newton

The energy produced by the breakdown of chemical bond between atoms:

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Light energy

chemical energy

electrical energy

kinetic energy

Multi - meter is an instrument which can be used to measure:

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Current

Potential difference

all of the above

Resistance

A,C electric supply at homes:

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240 volt

50 volt

220 volt

1000 volt

Voltmeter is connected in.

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Parallel position

Series position

Both a and b

None of these

The device use to store electric current:

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Fuse

Switch

Resistor

Capacitor

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