Question # 1

An ideal current source shall have resistance

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Zero

Finite but not zero

Infinite

Depend upon requirement

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

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

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Gold

Silver

Copper

Silicon

The fraction change in resistance per Kelvin is known as:

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Temperature coefficient of Resistance

Coefficient of voltage of change

Thermal expansion

All of the above

Which one of the following bulbs has the least resistance.

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100 W

200 W

500 W

1000 W

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

Colour codes are used to calculate the.

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Nature of resistor

Numerical value of resistance

Potential difference

Current

If there is no fourth band, tolerance is shows as

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10%

A charged conductor has charge on its.

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Inner surface

Outer surface

Middle surface

Surrounding space

The reciprocal of resistance is called.

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Capacitance

Resistance

Conductance

Inductance

Two resistance of 2 Ohm each are connected in parallel combination equivalent resistance will be.

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4 Ohm

2 Ohm

1 Ohm

8 Ohm

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

Calculate current in 2 2R /4Ω resistor.

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1 A

2R /4Ω

R/3Ω

2R /3Ω

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

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Chemical cell

Volt cell

Volta cell

Volta meter

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

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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