Question # 1

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

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Inversely proportional

Directly proportional

Equal

Non of the above

The device use to store electric current:

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Fuse

Switch

Resistor

Capacitor

Ammeter is used to.

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Measure the current

Detect the current

Measrue the voltage

None of them

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

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Galvanometer

Ammeter

Voltmeter

Multi - meter

The potential of the neutral wire is.

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Zero

+220 volts

220 volts

Changing

A device which does not allow current to pass through it overt a certain limit:

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Switch

circuit breaker

Resistor

Fuse

In Ohm's law V =

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V/I

I

RI

R/I

The conductors having larges resistance are called:

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Fuses

Switches

Resistors

Capacitors

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

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Transformer

Ammeter

Voltmeter

Fuse

Voltmeter is connected in.

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Parallel position

Series position

Both a and b

None of these

Resistance ' R" is equal to.

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I

V

V/I

I/V

V_s / V_{p is equal to.}

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Vp / Vs

Np / Ns

Ns / Np

None

1 m A is equal to.

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10^-3A

10^-6A

10^-2 A

10^-8A

Ammeter is always connected with a circuit in.

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parallal

Series

Both a and b

None of these

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

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