Question # 1

The conventional current is due to the flow of

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Atoms and molecules

Positive charge

Negative charge

Bot (b) and (c)

Kirchhoff's first rule is the manifestation of the law of conservation of.

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Mass

Charge

Energy

Momentum

The algebraic sum of potential change in a closed circuit is zero.

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Kirchhoff's 1st rule

Kirchhoff 2^nd rule

Krichoff's 3^rd rule

Kirchhoff 4^th rule

When a wire is stretched and its radius becomes r/2, then its resistance will be

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16 R

4 R

2R

0

A charged conductor has charge on its.

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Inner surface

Outer surface

Middle surface

Surrounding space

Which one of the following bulbs has the least resistance.

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100 W

200 W

500 W

1000 W

The vessel containing the tow electrodes and liquid to known as.

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Chemical cell

Volt cell

Volta cell

Volta meter

The Kirchhoff 1^st rule is manifestation of:

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Law of conservation of mass

Law of Conservation of charge

Law of conservation of energy

None of above

The powers of two electric bulbs are 100w and 200w. Which are connected to power supply of 220 V. The ratio of resistance of their filament will be:

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1:2

2:1

1:3

4:3

Ampere second stands for the unit of.

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Charge

emf

energy

Power

The free electrons experience force.

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In direction of -E

In direction of E

Both A and B

All of the above

An ideal current source shall have resistance

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Zero

Finite but not zero

Infinite

Depend upon requirement

Heat generated by a 40 W bulb in one hour is.

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140 J

1440 J

14400 J

144000 J

A wire uniform cross-section. A length L and resistance R is cut into two equal parts. The resistivity of each part will be:

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Doubled

Halved

Remain the same

One fourth

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

5 A of current flows through a conductor in 2 minutes, charge in the wire is.

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500 C

600 C

400 C

10 C

A substance having the negative temperature co efficient of resistivity out of the following is.

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Carbon

Iron

Tungsten

Gold

A rheostat can be used as variable resistor as well as a-------------

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Potential divider

Current divider

Wheat stone bridge

Power divider

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Physics FSC Part 2 Chapter 13 Online MCQ's Test MCQs With Answers

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