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Does A Voltmeter Have High Or Low Internal Resistance Compared To The Battery Voltage Across Which It Measures?

April 26, 2017battery high Internal low measures resistance voltage voltmeter

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Does A Voltmeter Have High Or Low Internal Resistance Compared To The Battery Voltage Across Which It Measures?

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A voltmeter must have a very high internal resistance, so that it isn’t shorting-out the battery. An ammeter (measuring amps) will have a very low internal resistance because it is placed in-circuit to measure the current which the circuit is drawing. Because of this, you should NEVER put your multimeter into amps mode while connected across a battery.