Question

What is the power output of a lightbulb that uses 300 joules of energy in 5 seconds?

A. 1,500 Watts
B. 300 Watts
C. 60 Watts
D. 0.015 Watts

Answer 1

C. 60 Watts

Step-by-step explanation:

Power is equal to work divided by time.

Therefore our answer will be 300J / 5s = 60W

Answer 2

Answer: C. 60 Watts

The unit for watt is Js. To solve the question we just need to put the values into the matching unit 300J5s=60W 300 J 5 s = 60 W . So the power of the light bulb is 60 W.