Question

An electic applaiance having a resistance of 200 ohm is operated at 200v. Calculate the energy consumed by the appliance in 5 minutes in joule

Answer 1

we know that ,
Power P =
${v}^{2} \div r \times t$
so applying the above formula we get,

P = 200*200*5*60/200
= 60000 joules for 5 minutes = 60KJ of energy