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Electric Circuits

Electric Circuits
Which of the following quantities consists of SI unit as WATT ?

 Current
 Charge
 Power
 Force

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Electric Circuits
The resistance of 100 W, 200 V lamp is

 1600 Ω.
 800 Ω.
 200 Ω.
 400 Ω.

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Electric Circuits
Three resistors each R Ohm is connected to form a triangle. The equivalent resistance across any terminals is

 3R/2.
 R/2.
 R.
 2R/3.

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Electric Circuits
If the peak value of a sine wave is 100 V, then its RMS value will be

 88 V.
 70.7 V.
 100 V.
 63.6 V.

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Electric Circuits
If L and C both are doubled than damping in above circuit will be

 halved as compared to previous one.
None of these
 remains same.
 doubled as compared to previous one.

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Electric Circuits
If the length of a wire of resistance R is uniformly stretched to n times its original value, what will be its new resistance

  R / n2.
  n2 / R.
  n2R.
  nR .

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