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# USAResistance in a Volt meter

Discuss Resistance in a Volt meter in the Electrical Forum area at ElectriciansForums.net

#### timberfinn

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Most meters today I understand are multimeters but I am only interested in the volt meter circuitry. The reason I am asking this is because the volt meter seems to only register voltage across a load and not on a plain conductor such as the neutral circuit. In my limited experience and according to my instructor, the volt meter reads zero if you try to get a reading anywhere along the neutral circuit for one of two reasons: 1. "the voltage has been used up at the end of the last load" or
2. the "potential difference (difference in potential?) in the current in the neutral wire between the two leads of the voltmeter is zero". I argued that neither of these can correct because there are always amps in the neutral circuit and you cannot have amps without volts to push the electrons along. I argue that maybe it is possible that the resistance in the neutral circuit is lower (.005 ohms/ft for 12ga. copper wire) than the resistance in the internal circuitry of the volt meter itself since the circuitry wires are obviously going to be smaller in diameter than 12 ga. and thus of higher resistance. The current therefore takes the path of least resistance and by-passes the volt meter. Thus a zero reading in the neutral circuit. I am talking about a single phase 120v residential wiring system, although the principle is the same in any circumstance I would think. So what is the resistance in the internal circuitry of a standard analog voltmeter? Digital voltmeter?

#### EricMark

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#### Pete999

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#### static zap

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#### dmxtothemax

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