When making a measurement, a voltmeter should always be connected in
A) parallel with the power off
B) parallel with the power on
C) series with the power off
D) series with the power on

Question

Quizplus · Accepted Answer

A voltmeter is designed to measure the voltage difference between two points in a circuit without significantly altering the circuit itself. To accurately measure the voltage, it must be connected in parallel with the component or portion of the circuit being measured, and the power must be on to have a voltage to measure. Connecting it in series or with the power off would not allow for a proper voltage measurement.

When Making a Measurement, a Voltmeter Should Always Be Connected