Chris Smolinski wrote:

>>If it's really a current meter, then the voltage is found by ohm's law
>>against the meter's resistance plus the added series resistance.
> 
> Yes indeed it is. My question was whether the polarity of the 
> current/voltage is equal or opposite to that of the charge of the 
> object brought close to the sense wire.

I would start with thinking that when you bring a negative charge to the
sense wire, it "pushes" electrons away and through the meter, and vice
versa for a positive charge.

So due to the inversion of electron movement compared to the current
direction standard, you'd have a positive current flowing into the meter
for a positive charge.

Gerhard

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