an electric kettle rated at 220v,22kw works for three hours .find the current drawn and energy consumed

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Solution

Power, P = 22 kW = 22000 W
Voltage, V = 220 V
Time, t = 3 h = 3 Ã— 3600 = 10800 s
So, the energy consumed is = 22000 Ã— 10800 = 237600000 J
The current drawn is, I = P/V = 22000/220 = 100 A

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