Question

An electric kettle works on 230 v supply. If 4A current flows through it for 3 minutes, what is the resistance of the coil?

Answer 1

Answer:

Given

V=230 volt

P=1000 W or j/sec

t=5 mit=5×60 sec

Heat produce, H=P×t

H=1000 j/sec×5×60 sec

H=300000 j