When testing a fuse in a circuit with power applied using a voltmeter, an open fuse will measure
A) zero volts
B) 12 V
C) 120 Vac
D) the value of the voltage source

Question

Quizplus · Accepted Answer

An open fuse interrupts the circuit, preventing current flow. When measuring across an open fuse with a voltmeter in a powered circuit, the meter will show the full voltage of the source because there is a potential difference across the fuse.

When Testing a Fuse in a Circuit with Power Applied