An electric bulb is connected to a 220 V generator. The current is 0.50
A. What is the power of the bulb?
b) Name the commercial unit of electrical energy.
c) Express it in Joule
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Explanation:
A) Power = potential difference × Current
= 220 × 0.5 = 110 Watt.
B) Commercial unit of electrical energy is KWh( kilo watt hour).
C) 1 KWh = 1000 × 3600
= 3.6 × 10^6 Joule
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