Which of the following equations describes the relationship between work, power, and time?

a. W=P/t

c. P=W/t

b. W=t/P

d. P=t/W

The correct answer is (c.) P=W/t. Power measures the rate of work that has been done for a specific time. It is the energy per time. Work is the energy to cause displacement of an object, however, power does not contain direction in which it is a scalar quantity. Thus, power is equivalent to the quotient of the work and time.