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Electric Circuits

Electric Circuits
In the figure, the potential difference between points P and Q is

 - 6 V.
 10 V.
 6 V.
 12 V.

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Electric Circuits
The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is

 17.3A .
 22.4A.
 30A.
 14.14A.

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Electric Circuits
The life of a lead acid battery is expected to be

 10 to 15 years.
 6 months.
 1 year.
 2 to 5 years.

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Electric Circuits
Two battery having unequal emf

 cannot be connected in series.
 can be connected in series only.
 cannot be connected in parallel.
 both a and d

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Electric Circuits
Conductance of any conductor is expressed as

  mho.
  volt2 / watt.
  ampere / watt.
  watt / ampere2.

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Electric Circuits
A 3 wire, 3 - φ supply feeds a load consisting of three equal resistors. By how much is the load reduced if one of the resistors be removed when the load is in star?

 25 % of the original load.
 50 % of the original load.
 33.33 % of the original load.
 66.66 % of the original load.

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MORE MCQ ON Electric Circuits

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