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Electric Circuits

Electric Circuits
A wire of resistance R has it length and cross - section both doubled. Its resistance will become

 0.5R.
 2R.
 4R.
 R.

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Electric Circuits
In a lead acid cell PbSO4 formed during

  charging only.
  both during charging as well as discharging.
  discharging only.
  neither during charging nor discharging.

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Electric Circuits
The arrangement of 12 cells each of internal resistance 1.5 Ohm to give maximum current in external load resistance of 2 Ohm will be

 all 12 in parallel.
 in 4 parallel rows each row having 3 cells in series.
 all 12 in series.
 in 3 parallel rows each row having 4 cells in series.

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Electric Circuits
A wire of 0.14 mm diameter and specific resistance 9.6 Ω - cm is 440 cm long. The resistance of the wire will be

 27.4 Ω.
 13.7 Ω.
 9.6 Ω.
 11.3 Ω.

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Electric Circuits
Highest current density is usually recommended for

  chromium plating.
  bronze plating.
  cadmium plating.
  tin plating.

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Electric Circuits
According to duality principle a series inductor (L) can be represented as

 Parallel C.
 Series C.
 Parallel L.
 Series L.

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MORE MCQ ON Electric Circuits

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