Question

How much work is done at the rate of 40W in 40s

Answer 1

power = workdone/time

40w = work/40sec

​40X40 = work done

work done = 1600 J

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Please mark the answer as brain list answer

Answer 2

The amount of work done is 1.6 kJ

Given : At the rate of 40W in 40s

To find : The amount of work done.

Solution :

We can simply solve this numerical problem by using the following process. (our goal is to calculate the amount of work done)

Here, we have to use the following mathematical formula.

Work = Power × Time

In this case,

• Power = 40W
• Time = 40s

So, by putting the available data in the above mentioned mathematical formula, we get :

Work = 40 × 40 = 1600 J = (1600 ÷ 1000) kJ = 1.6 kJ

(As, 1 kJ = 1000 J)

Hence, the amount of work done is 1.6 kJ