Question

17. An electric kettle rated at 220 V, 2.2 kW, works for 3 hours. Find the energy consumed and the current
drawn.

Answer 1

Answer:

Power, P = 2.2 kW = 2200 W

Voltage, V = 220 V

Time, t = 3 h = 3 × 3600 = 10800 s

So, the energy consumed is = 2200 × 10800 = 23760000 J

The current drawn is, I = P/V = 2200/220 = 10 A

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Answer 2

Answer:

power =220 watt

time = 3hours

( 1 hours =3600 sec )

so , 3 hours =10800 sec

then, energy =power × time taken

so, 220 × 10800 = 2376000