411 REFERENCE · Wikibooks
Practical Electronics/Test Equipments/Voltmeter
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Voltmeter
A voltmeter measures voltage.
200px
The voltmeter's terminals must be in parallel with the voltage being measured. Voltmeters have a large resistance (typically 1 megaohm), so that they only have a small effect on the voltage.