A 100-W light bulb is left on for 10.0 hours.Over this period of time,how much energy was used by the bulb?
A)1 000 J
B)3 600 J
C)3 600 000 J
D)1.34 hp

Question

Quizplus · Accepted Answer

We can use the formula:

Energy = Power x Time

where Power is in watts, Time is in seconds, and Energy is in joules.

Converting the given values:

Power = 100 W
Time = 10.0 hours = 10.0 x 60 x 60 seconds = 36,000 seconds

Substituting the values:

Energy = 100 W x 36,000 seconds
Energy = 3,600,000 joules

Therefore, the amount of energy used by the bulb is 3,600,000 J, which is choice C.

A 100-W Light Bulb Is Left on for 10