2007-12-16 04:50:59 · 2 answers · asked by Anonymous in Consumer Electronics ➔ Other - Electronics
An ammeter measures current, the current has to flow through it. The voltmeter is measuring voltage, no current has to go through the voltmeter.
2007-12-16 04:56:01 · answer #1 · answered by Computer Guy 7 · 1⤊ 0⤋
Volt meters measure "potential difference", or voltage "across" a device. Thus, the meter probes must connect to each end of (or in parallel with) the device being tested. This can only be accomplished with a parallel connection.
Ammeters measure electrical current flowing "through" a device. The only way to measure current through a device, is to break the circuit, insert the meter probes in "series" with the device being tested. Now, the current flowing through the meter is the same current flowing through the device or circuit being tested.
2007-12-16 14:31:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋