An externally powered ____is often used to determine whether there is a complete, unbroken circuit.
A) relay
B) testlight
C) multimeter
D) jumper wire

Question

Quizplus · Accepted Answer

A test light is a simple device used to determine if there is a complete circuit. It consists of a light bulb and two wires, one of which is connected to the positive terminal of a battery and the other to the negative terminal. When the test light is connected to a complete circuit, the light bulb will light up.

An Externally Powered ____Is Often Used to Determine Whether There