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Potironette · Posted 03-30-2017, 07:45 PM

I guess defining a zero potential would be useful when there's more than one battery..?
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What does it mean when when a current shows up negative using Kirchhoff's Laws? I heard something about how it means that the direction of current chosen was wrong in class, and after searching online it seems that it means the current is flowing the other way? But what does that mean?

		#294	Potironette petite fantaisiste
I guess defining a zero potential would be useful when there's more than one battery..? --- What does it mean when when a current shows up negative using Kirchhoff's Laws? I heard something about how it means that the direction of current chosen was wrong in class, and after searching online it seems that it means the current is flowing the other way? But what does that mean? More specifically, my homework was to find power dissipated through each resistor in this circuit: It seems that switching the sign of the negative current in the equations works, but how can current across R_2 be going the other way..?
	Posted 03-30-2017, 07:45 PM