Circuit completion : is it necessary?
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Apr27-11, 07:49 PM
Also, if you connect a voltmeter to one end of the battery, and the other end of the voltmeter to the ground, then charge should flow from the battery to the ground and a voltage should be recorded in the voltmeter. But this would imply that a 12 V battery should register 6V when connecting just one terminal to the ground, which doesn't seem correct.
It isn't. As mentioned in that post, the effective charge is miniscule, less than 10
Coulombs, and so will be the voltage.