Question # 1

The reciprocal of resistance is called.

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Capacitance

Resistance

Conductance

Inductance

The heat produced by passage of current.

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H=I²Rt

H=IR2T

H=I/Rt

H=I²/Rt

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

The value of maximum output power is?

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E/4R

E²/4R

E/4R²

Non of above

If 1 x 10⁷ electrons passes through a conductor in 1.0 micro second , then the current is.

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2 A

1.6 A

2.6 x 10^-6 A

1.6 x 10^-6 A

The resistivity of two wires isρ₁ andρ₂ which are connected in series. If there dimentions are same then the equivalent resistivity of the combination will be:

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(ρ₁ +ρ₂)

1/ρ₁+ 1/ρ₂

ρ₁+ρ₂/2

ρ_1/ρ₂

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

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Increase

Remains constant

Decreases

Changes exponentially

The conventional current is due to the flow of

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Atoms and molecules

Positive charge

Negative charge

Bot (b) and (c)

Thermosouple is an arrangement of two different metals:

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Two convert heat energy into electrical energy

To produce more heat

To convert heat energy into chemical energy

To convert electrical energy into heat energy

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

Heat sensitive resistors are called.

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resistors

Capacitor

Thermistors

Inductors

The head produced by the passage of current through a resistor is.

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H= I²Rt

H = IR²t

H = 1/Rt

H = I²/Rt

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

Ampere second stands for the unit of.

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Charge

emf

energy

Power

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

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Gold

Silver

Copper

Silicon

Magnetic effect of current is used

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To detect a current

To measure a current

In electric motor

All of above

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

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