Question # 1

During electrolysis process, density of CuSO₄ solution

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Remains constant

Decreased

Increased

None of these

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

When a pot difference of 4 volt is applied across resistance, 10 J of energy is converted Find charge flows

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0.20 C

2.5 C

5.0 C

10.0 C

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 thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

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 --------------------decrease with the increase in temp

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Gold

Silver

Copper

Silicon

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

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600 Volt

700 Volt

800 Volt

900 Volt

106 electrons are moving through a wire per second the current developed is:

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1.6 x 10-19 A

1 A

1.6 x 10-13A

106 A

A rheostat can operate as.

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Amplifier

Potential divider

Oscillator

Transformer

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

For non-ohmic devices, the graph between V and I is

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Not a straight line

A straight line

A curve

All of above

In gas the charge carriers are:

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Electrons

Ions

Both a & b

None of above

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

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