Which best describes the reason that a circuit breaker or fuse may interrupt electric current if someone is using too many household devices at the same time such as a hair dryer, microwave oven, and toaster?
A) The devices are all connected in series and each device that is switched on adds an additional series resistance.
B) The devices are all connected in parallel and each device that is switched on decreases the total circuit resistance causing the total circuit current to increase.
C) The circuit breaker or fuse has too small of a rating.
D) The electric company limits the amount of current supplied to a house.

Question

Quizplus · Accepted Answer

When devices are connected in parallel, turning on more devices decreases the total resistance and increases the total current, which can exceed the circuit breaker's or fuse's rating, causing it to interrupt the current.

Which Best Describes the Reason That a Circuit Breaker or Fuse