Question

i) Define electric power. A device of resistance R is connected across a source of V
current I. Derive an expression for power in terms of voltage and resistance
ce of V voltage and draws a
i) An electric bulb is connected to 220V generator. The current is 0.5A. What is the power of the bulb?
OR​

Answer 1

Answer:

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Answer 2

Answer:

i)Electric power is the amount of electrical energy consumed per unit time.

Power=Potential difference ×Current

Therefore,P=V^2/R

ii)Given:V=220 volt

I=0.5A

Therefore, Power=VI

=220×0.5

=110 Watt

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