Question # 1

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

Calculate current in 2 2R /4Ω resistor.

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1 A

2R /4Ω

R/3Ω

2R /3Ω

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

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

mho -m-1 is the unit of.

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Resistance

Resistivity

Conductance

Conductivity

Magnetic effect of current is used in.

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Toaster

Electric iron

Electric motor

D.C. Battery

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

A certain wire has a resistance R, the resistivity of an other wire of an identical material with the first, except for twice its diameter is.

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1/4 R

4R

2R

Same as R

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

Electric power:

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Vx1

V²x1

V/1

V/1²

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

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

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

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

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