A household circuit rated at 120 volts is protected by a fuse rated at 10 amps. What is the maximum number of 100 watt light bulbs which can be lit simultaneously in parallel in this circuit without blowing the fuse?
A) 4
B) 6
C) 12
D) 20
E) 24

Question

Quizplus · Accepted Answer

The total current capacity of the circuit is 10 amps. Each 100 watt bulb draws 100W / 120V = 0.833 amps. Therefore, the maximum number of bulbs is 10 amps / 0.833 amps per bulb ≈ 12 bulbs.

A Household Circuit Rated at 120 Volts Is Protected by a Fuse