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Electrician Set-2
Basic Electrical Practice
23

Basic Electrical Practice MCQ with Answers

23) What is the S.I unit of specific resistance?

Ohm/cm

Ohm/metre²

Ohm-metre

Micro ohm/cm²

Answer is:

Ohm-metre

Basic Electrical Practice MCQ with Answers

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Related Basic Electrical Practice MCQ with Answers

24) Which electrical quantity affects the heat generated in a conductor?

Voltage

Square of the current

Square of the resistance

Current passed through it

Answer is:

Square of the current

25) What is the change in value of resistance of the conductor, if its cross section area is doubled?

No change

Decreases 2 times

Increases 2 times

Decreases 4 times

Answer is:

Decreases 4 times

26) What is the resistance of Light Dependent Resistor (LDR), if the intensity of light is increased?

Increases

Decreases

Remains same

Becomes infinity

Answer is:

Decreases

27) Which formula is used to calculate the power of a DC circuit?

Voltage x time

Current x voltage

Current x resistance

Voltage x resistance

Answer is:

Current x voltage

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