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Electric Circuits

Electric Circuits
The resistance of 200 W, 200 V lamp is

  200 Ω.
 100 Ω.
 800 Ω.
 400 Ω.

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Electric Circuits
Coating generally recommended for hard surfacing is

 lead plating.
None of these
 copper plating.
 chromium plating.

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Electric Circuits
The time required for a pulse to change from 10 % to 90 % of its maximum value is known as

 fall time.
 run time.
 rise time.
 decay time.

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Electric Circuits
A cube of material of side 1 cm has a resistance of 0.002 Ω between its opposite faces. If the same volume of the material has a length of 4 cm and a uniform cross - section, the resistance of this length will be

  0.128 Ω.
 0.016 Ω.
  0.032 Ω.
 0.064 Ω.

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Electric Circuits
Which of the following has positive temperature coefficient ?

  Paper.
  Germanium.
  Rubber.
  Gold.

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Electric Circuits
In RC series circuit R = 2Ω, C = 2μF and 10V dc is applied. Then what is the value of current?

 10A
 5A
 0A
 2A

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