Question # 1

Current is equal to:

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IR²

CV

Q/t

IR

Example of mechanical waves is:

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Radio waves

X-rays

Light waves

Sound waves

The speed of sound in a liquid is …………..than that in gases:

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Ten times

Fifteen times

Five times

Two times

According to Ohm's law V =________

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I²R

IR²

IR

I/R

The S.I unit of electric current is:

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Volt

Ampere

Coulomb

Watt

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2Ω

4Ω

8Ω

12Ω

Image formed on a camera is:

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Real, inverted, and diminished

Virtual, upright and diminished

Virtual, upright and magnified

Real, inverted and magnified

The A.C. used in our houses has frequency _____ cycle/sec

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60

30

50

130

Which instrument measures the potential difference:

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Voltmeter

Barometer

Galvanometer

Ammeter

The unit of potential difference is:

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Volt

Coulomb

Ampere

Joule

Which we double the voltage in a simple electric circuit. We double the

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Current

Power

Resistance

both a and b

Which gate is used for safety alarm:

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AND

NANAD

OR

NOR

The current used in houses is:

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A.C.

Conventiona current

Current

D.C

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