Question # 1

A rheostat can operate as.

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Amplifier

Potential divider

Oscillator

Transformer

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

The color code of "Green"

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8

3

5

7

Resistance tolerance for gold colour is.

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50%

30%

20%

5%

Ampere second stands for the unit of.

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Charge

emf

energy

Power

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

The unit of resistance is:

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Ω

Ωm

Ω^-1m^-1

Ωm^-1

Unit (S.I) of temperature coefficient of resistivity of a material is

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K

K^-1

^oC

K^-2

The drift velocity is of order:

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10^-13m/s

10³ m/s

10^-3m/s

10^-4m/s

By increasing the temperature of conductor, the flow rate of charges.

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Increase

Remains constant

Decreases

Changes exponentially

Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:

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3Ω

4Ω

4.5Ω

5Ω

An ideal current source shall have resistance

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Zero

Finite but not zero

Infinite

Depend upon requirement

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

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

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