If you have 7 total 100-W light bulbs in a parallel circuit in your basement and you leave them on for 1.5 days,how much energy (in kilowatt hours)would be used?
A)25.2 kWh
B)1050 kWh
C)3520 kWh
D)25200kWh

Question

Quizplus · Accepted Answer

To calculate the energy used by the 7 light bulbs in 1.5 days, we need to first find the total power consumed by them.

Each bulb is 100 W, so the total power consumed by all 7 bulbs in parallel = 7 x 100 W = 700 W.

To convert this to kWh, we need to multiply by the time they are left on (in hours) and divide by 1000:

700 W x 36 hours = 25200 Wh

25200 Wh / 1000 = 25.2 kWh

Therefore, the correct answer is A) 25.2 kWh.

If You Have 7 Total 100-W Light Bulbs in a Parallel