Question

If a clock expends 2 W of power from a 1.5 V battery, what amount of current is supplying the clock? Ans: 1.3 A

Answer 1

Gives

P=2W

V=1.5 V

We know that

$P=IV \\I=\frac{P}{V}$

Put value

$I=\frac{2}{1.5}=1.3Amp$