Energy and Power - Engineering

Q1:

Three hundred joules of energy are consumed in 15 s. The power is

A 2,000 W

B 2 W

C 20 W

D 200 W

ANS:C - 20 W

POWER = WORK/TIME.
P = W/T.
P = 300joules /15sec = 20 watts.

Hope it is understandable.