Question # 1

A parallel circuit is also used as a divider for:

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Power

Resistance

Current

Voltage

An object gains excess negative charge after being rubbed against another object, which is:

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Neutral

Negatively charged

Charged

Either, a,b,and c

Ripple tank is an instrument which is used to study the characteristics of:

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Mechanical waves

Light waves

Radio waves

Electro-magnet waves

The A.C used in Pakistan has frequency:

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60 Hz

30 Hz

50 Hz

130 Hz

Magnetic effect of electric current was first discovered by:

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Faraday

Ampere

Volta

Lenz

X=A.B. This equation is used for which operation:

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AND

OR

NOT

NAND

The particles emitted from a hot cathode surface are:

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Positive ions

Negative ions

Proton

Electron

The unit of electrical energy is:

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Joule

Watt

Volt

Electron volt(eV)

1 volt is equal to:

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JC

JC^-1

JC^-2

JC^-3

the phenomena which is used in applying paints on the surface of different articles is called:

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electroplating

electroscope

electrostatic induction

electrolytes

Angle opposite to the base of triangle of prism is called:

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angle of incidence

angle of refraction

angle of prism

emerging angle

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power:

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Remains unchanged

Halves

Doubles

Four time

The 1st practical electric battery is known as:

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Voltaic

Pile

Voltaic pile

Voltaic cell

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