Question

If a body work 20 joule in 5 sec. Its power is

Answer 1

Power= energy/time
Therefore, Power will be = 20 joules/5 seconds
= 4 Joules/second

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