Question

A source of potential difference V volt sends current I ampere in a circuit for time t second.Write expressions for (a) electrical energy supplied by the source, and (b) electrical power spent by the source.

Answer 1

P=V×I
W=V×Q
RATE OF CHANGE OF WORK DONE =VQ/T
I= Q/T.....H=PT
H=V×I×T(V=IR)
H= IR I T ... H = I^RT
also known as joules law