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ELECTRIC CIRCUITS

Electric Circuits
Two equal resistors R connected in series across a voltage source V dissipate power P. What would be the power dissipated in the same resistors when they are connected in parallel across the same voltage source?

 16P.
  P.
 4P.
 2P.

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Electric Circuits
Two identical resistors are first connected in parallel then in series. The ratio of resultant resistance of the first combination to the second will be

 4.
 0.5.
 2.
 0.25.

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Electric Circuits
The ratio of the resistance of a 200 W, 230 V lamp to that of a 100 W, 115 V lamp will be

 4.
  2.
 0.25.
  0.5.

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

 400 Ω.
  200 Ω.
 100 Ω.
 800 Ω.

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Electric Circuits
Two 1 kΩ, 1 W resistors are connected in series. Their combine resistance and wattage will be

 2 kΩ, 1 W.
 0.5 kΩ, 2 W.
 1 kΩ, 1 W.
 2 kΩ, 0.5 W.

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