Q: What do voltmeters measure?


Read this paragraph and choose the correct option from the provided answers:

21.4 DC Voltmeters and Ammeters • Voltmeters measure voltage, and ammeters measure current. • A voltmeter is placed in parallel with the voltage source to receive full voltage and must have a large resistance to limit its effect on the circuit. • An ammeter is placed in series to get the full current flowing through a branch and must have a small resistance to limit its effect on the circuit. • Both can be based on the combination of a resistor and a galvanometer, a device that gives an analog reading of current. • Standard voltmeters and ammeters alter the circuit being measured and are thus limited in accuracy.

 Choices:

- temperature

- amplitude

- frequency

- voltage


A:
voltage