Question

The power of an engine which can do work of 800 Joules in at sec is
a) 100 watt
b) b) 200 watt
c) c) 300 watt
d) 4) 400 Joules​

Answer 1

The correct option is 100 watts.

How to solve the problem

Given:

Work done, W = 800 J

Time taken, T = 8 s

To Find:

Power of an engine, P = ?

Solution:

The formula to find power when work done and time is given : P = Work/time

P = W/T

P= 800/8

P= 100 Watts

So the answer to this problem will be 100 watts.