Assertion (A) : The power spent in doing a work remains the same, even if the same work is done in a lesser time.

Reason (R) : The power spent by a source depends on the time taken by the source to do that work.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true and R is not the correct explanation of A
3. Assertion is true but reason is false
4. Assertion is false but reason is true

Assertion is false but reason is true

Explanation

Assertion (A) is false because the power spent in doing a work depends inversely on time taken to do it so for a given amount of work performed at a faster rate i.e., in lesser time implies more power is spent.

Reason (R) is true because power depends inversely on the time taken to do a work so less time means more power spent, and vice versa.