The resistance of an electric heater is $200$ $Ω$ and it draws a current of $1$ A. Calculate the power consumed by it and the potential difference across its ends.

100 W, 100 V

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400 W, 400 V

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100 W, 10 V

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200 W, 200 V

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Solution

The correct option is D $200 W, 200 V$
From Ohm's law-

Potential difference $= V = I R = 1 \times 200 = 200 V$

Power $= P = I^{2} R = 1^{2} \times 200 = 200 W$

Answer-(D)

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