Question

A body does 1200 joules of work in 2 minutes. Calculate its power.

Answer 1

Work done (W) = 1200 J
Time taken (t) = 120 s
We can calculate the power of the body as,
$$\begin{gathered} \mathrm{Power}=\frac{\mathrm{Work}\mathrm{done}}{\mathrm{Time}} \\ \mathrm{So}, \\ \mathrm{Power}=\frac{1200}{120}\mathrm{W} \\ =\boxed{10\mathrm{W}} \end{gathered}$$
So, the power of this appliance is 10 W.