Question # 1

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

Ampere second stands for the unit of.

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Charge

emf

energy

Power

Electric power:

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Vx1

V²x1

V/1

V/1²

The color code of "Green"

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8

3

5

7

Tolerance of "Gold" band.

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±10%

±5%

±15%

±20%

In gas the charge carriers are:

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Electrons

Ions

Both a & b

None of above

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

Terminal potential difference is greater than emf of the cell when

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Circuit is open

Circuit is closed

small battery is charged by bigger battery

None of these

106 electrons are moving through a wire per second the current developed is:

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1.6 x 10-19 A

1 A

1.6 x 10-13A

106 A

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

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Carbon

Iron

Tungsten

Gold

In carbon resistors, then value of Blue colour is.

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6

7

8

9

The resistivity of --------------------decrease with the increase in temp

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Gold

Silver

Copper

Silicon

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

Heat sensitive resistors are called.

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resistors

Capacitor

Thermistors

Inductors

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

e.m.f is the conversion of --------------- energy into electrical energy

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Chemical

Solar

Light

None of these

the current which flows from a point at higher. potential to point at lower potential is called.

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Electric current

Conventional current

Either of these

None of above

A charged conductor has charge on its.

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Inner surface

Outer surface

Middle surface

Surrounding space

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

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