Question # 1

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

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Mass

Charge

Energy

Momentum

Electric power:

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Vx1

V²x1

V/1

V/1²

A charged conductor has charge on its.

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Inner surface

Outer surface

Middle surface

Surrounding space

When a wire of length 'l' and resistance R is cut into two equal parts then resistivity of each part.

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is doubled

Remains the same

Is halved

Is one fourth

What is the resistance of carbon resistor which has band brown black brown.

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100 Ohm

1000 Ohm

10 Ohm

1.0 Ohm

Tolerance of "Gold" band.

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±10%

±5%

±15%

±20%

Resistance tolerance for gold colour is.

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50%

30%

20%

5%

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

Resistivity at a given temperature depends upon.

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Area of cross section

Length

Nature of material of conductor

Both length and area

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

Three resistors of resistance R each are combined in various ways, Which of the following cannot be obtained?

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3 RΩ

2R /4Ω

R/3Ω

2R /3Ω

During electrolysis process, density of CuSO₄ solution

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Remains constant

Decreased

Increased

None of these

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

The reciprocal of resistance is called.

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Capacitance

Resistance

Conductance

Inductance

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

Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is.

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10 kelvin

70 kelvin

200 kelvin

35 kelvin

The conventional current is due to the flow of

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Atoms and molecules

Positive charge

Negative charge

Bot (b) and (c)

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

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