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Electric Circuits

Electric Circuits
A 3Ω resistor having 2A current will dissipate the power of

 2 W.
 8 W.
 4 W.
 12 W.

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Electric Circuits
A 20 μF capacitor and 200 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow dimmest?

 10 Hz.
 100 Hz.
 1000 Hz.
 1 Hz.

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Electric Circuits
The electrical conductivity of metal is typically of the order of (in ohm - m)

 105.
 10 - 6.
 10 - 4.
 107.

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Electric Circuits
To reduce hysteresis loss, we use

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

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Electric Circuits
Can a 250 V, 5 A single way switch be used in place of a 250 V, 15 A Switch?

  Single way switch doesn operate at such current ratings.
  Single way switch doesn exist.
  Yes.
  No.

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Electric Circuits
A capacitor passes a current of 12.6 mA when supplied with 20 V ac with a frequency of 1000 Hz. The capacitance will be

 0.01 μF.
 0.001 μF.
 1 μF.
 0.1 μF.

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MORE MCQ ON Electric Circuits

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