If it reads -9 v, switch the meter leads and the red one is positive.
Ode
At 06:23 PM 12/11/2003 -0700, you wrote:
>>>>
Sorry all for this very dumb question, but I was playing around and put together another generator. The power supply is a phone charger, 9V 450 ma. For experimental purposes I used tap water, Connecting what I thought was the positive power lead to the electrode I chose to be the positive one, tons of bubbles immediately started coming off that electrode. Is this indeed the positive power lead then? I know I've read this before but can't find it. For this power supply both wires are black so I have no color coded wires to guide me..........once I determine the positive lead, I'll mark it with red nail polish........so I won't get confused again. Pls nobody think I plan to actually make CS with tap water, this was just an experiment to "see" the process, and find out which lead is the positive one.<<<<
TIA,
paula
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