Question

How much energy does a 50-watt light bulb use compared to a 100-watt light bulb if both are shining for the same length of time? Explain your answer.

Answer 1

Energy consumed = power *time
Energy used by 50 watt bulb = 50 *t
Energy used by 100 watt bulb = 100 *t
where t is the time for which they are shining
from above it is clear that the energy used by 100 watt bulb is twice the energy used by 50 watt bulb.

Answer 2

Thank you very much....I was beginning to get a headache trying to figure the answer out.