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E=ir
I know this stuff, but I have a physicist arguing with me about it. I think he's all wet but he's really smart and now I'm worried I'm wrong.
Using the basic electrical equation E=IR:
If you put 12 volts across a 10 ohm resistance the current is some value ( X ).
If you double the resistance the current becomes ( X/2 ) and the voltage remains the same, correct? He SWEARS the voltage is affected and the current is not. I cannot understand his logic.
edit:
This is in the context of an automotive circuit, so the max voltage in the entire circuit is 12.
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Last edited by wdfifteen; 12-12-2011 at 06:58 AM..
Reason: clarification
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