Question

A body does 20 joule of work in 5 seconds what is its power

Answer 1

$\mathfrak{\large{\underline{\underline{Answer:-}}}}$

Given :-

Work done by body = 20 j

Time taken to do work = 5 seconds

Explanation :-

Power :- The rate of work done by a body is known as power.

The work done, time and power is related by this formula :-

★ $\boxed{\sf{ </strong><strong>P</strong><strong> </strong><strong>=</strong><strong>\frac{work \: }{time \: } </strong><strong> </strong><strong>}}$

$\implies$ P = $\bold{</strong><strong>\frac{20j}{5s} </strong><strong> }$

$\implies$ P = 4 watt

★ $\boxed{\sf{</strong><strong>P</strong><strong> </strong><strong>=</strong><strong> </strong><strong> \frac{1joule}{1second} </strong><strong>}}$

Answer 2

Solutions:

Power = Work done/Time taken

Here, Work done = 20 J

And, Time taken = 5 s

So, putting these values in the above formula, we get;

Power = 20 J/5 s

Power = 4 J/s or 4 W