Question

A current of 2 A is passed through a coil of resistance $75\Omega$ for 2 minutes.

(a) How much heat energy is produced?

(b) How much charge is passed through the resistance?

Answer 1

(a) Heat energy produced, $H=I^{2}Rt=2^2\times 75\times 2\times 60=36000J$

(b) Charge that is passed, $q=It=2\times 2\times 60=240C$