Question

An electric heated is rated 1200 w .How much energy does it use in 10 h

Answer 1

p=1200w...,,, t= 10x3600=36000s
U (energy) = pxt
u=1200x36000=432x10^5j

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Answer 2

Hey there! ☺☻☺

$Power = 1200 \ W\\Time = 10 \ h\\\\We \ know,\\Electric Energy = Power \times time\\E = v\times i\times t\\E = 1200 \times 10 \ W \ h\\\boxed{\boxed{{\bold{E = 12 \ kWh}}}}$

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