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Re: Ohm's 'law' & minus sign



Chuck Britton wrote:


This delta V is a SPACIAL delta rather than a temporal (final -
initial) isn't it?


Yes - if the current flows in a direction from point A on one end of a resistor to
point B on the other end, delta V = VB - VA = -Ri. This is what other respondents
have mentioned as part of Kirchoff's Rules. The current is steady, so the delta
definitely refers to two spatial locations at the same time, not an initial and
final state.

Bob at PC