Question # 1

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 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 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

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

Kirchhoff's voltage rule is a way of stating conservation of.

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Mass

Charge

Energy

Momentum

The algebraic sum of potential change in a closed circuit is zero.

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Kirchhoff's 1st rule

Kirchhoff 2^nd rule

Krichoff's 3^rd rule

Kirchhoff 4^th rule

If the resistance of 500 Ohm have fourth band of silver colour then its upper maximum resistance will be.

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600 Ohm

550 Ohm

450 Ohm

400 Ohm

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

The potential difference between the head and tail of an electrical to

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600 Volt

700 Volt

800 Volt

900 Volt

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

Heat generated by a 40 W bulb in one hour is.

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140 J

1440 J

14400 J

144000 J

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

The product of resistance and conductance is

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1

Resistivity

Conductance

Zero

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

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Chemical

Solar

Light

None of these

The free electrons experience force.

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In direction of -E

In direction of E

Both A and B

All of the above

One ohm is equal to

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VC-1

CV-1

AC-1

VA^-1

Electric power:

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Vx1

V²x1

V/1

V/1²

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

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