Question

the power of a heater working on 230 volt is 1000 watt. find the heat generated in 5 minutes
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Answer 1

Answer:

V = 230V

P = 1000W

Time = 5×60 = 300s

P=VI

I = P/V

I = 1000/230

I = 4.34A

V = IR

R = V/I

R = 230/4.34

R = 52.99 ohm

H = I²Rt

H = (4.34)²× 52.99× 300

H = 29949.53 J