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Electric Circuits

Electric Circuits
Which of the following may be the value of resistivity of copper at absolute zero in ohm-metre?

 1.56.
 3.12.
 0.020.
 6.24.

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Electric Circuits
To reduce hysteresis loss, we use

 laminated sheets.
 CRGO steel.
 soft-iron.
 copper bars.

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Electric Circuits
A 10 Ohm resistor has power rating of 1W. Find the maximum current rating.

 0.1 A.
 0.01 A.
 1 A.
 0.316 A.

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Electric Circuits
What will be the capacitance when distance between the 2 plates of a condenser of capacitance 8 micro farad is reduced from 10 mm to 4 mm?

 1 microfarad.
 3.2 microfarad.
 20 microfarad.
 8 microfarad.

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Electric Circuits
You have to replace 1500 Ω resistor in radio. You have no 1500 Ω resistor but have several 1000 Ω ones which you would connect

 two in parallel.
 three in series.
 three in parallel.
 two in parallel and one in series.

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Electric Circuits
The power dissipated in a pure capacitor is

 proportional to the value of capacitance.
 zero.
 proportional to applied voltage.
 both (B) and (C) above.

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MORE MCQ ON Electric Circuits

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