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

Question # 1

Heat sensitive resistors are called.

Choose an answer

resistors

Capacitor

Thermistors

Inductors

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Question # 2

Three resistors of resistance R each are combined in various ways, Which of the following cannot be obtained?

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3 RΩ

2R /4Ω

R/3Ω

2R /3Ω

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Question # 3

mho -m-1 is the unit of.

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Resistance

Resistivity

Conductance

Conductivity

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Question # 4

Which one of the following bulbs has the least resistance.

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100 W

200 W

500 W

1000 W

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Question # 5

Tolerance of "Gold" band.

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±10%

±5%

±15%

±20%

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Question # 6

The Kirchhoff 1^st rule is manifestation of:

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Law of conservation of mass

Law of Conservation of charge

Law of conservation of energy

None of above

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Question # 7

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

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Question # 8

When a wire of length 'l' and resistance R is cut into two equal parts then resistivity of each part.

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is doubled

Remains the same

Is halved

Is one fourth

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Question # 9

Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is.

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10 kelvin

70 kelvin

200 kelvin

35 kelvin

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Question # 10

Semiconductor diodes are called:

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Ohmic

non ohmic

Both a & b

none of above

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Question # 11

Calculate current in 2 2R /4Ω resistor.

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1 A

2R /4Ω

R/3Ω

2R /3Ω

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Question # 12

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

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Increase

Remains constant

Decreases

Changes exponentially

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Question # 13

The heat produced by passage of current.

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H=I²Rt

H=IR2T

H=I/Rt

H=I²/Rt

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