19 ms·
I think you might have misunderstood. This example is notable precisely because cars don't behave like electrons in a circuit. Or do you have an example of a
by teraflop 11y ago
I think you might have misunderstood. This example is notable precisely because cars don't behave like electrons in a circuit.
Or do you have an example of a situation in which Kirchhoff's laws predict that adding a wire to a circuit decreases the total current?
- madez 11y agoThe weaker question "do you have an example of a situation in which adding a wire to a circuit decreases the total current?" is easy to answer positively. Adding a wire sometimes decreases total current.
- teraflop 11y agoLike I said, an example would be helpful, because I don't see how that's possible. (Unless we're talking about nonlinear devices like transistors, which doesn't seem like what the parent poster was talking about.)
- madez 11y agoI was thinking about electric circuits in general, so very much including transistors. I mean, we were also talking about street networks in general, or were we excluding intersections? The simple example I was thinking about is a "digital potentiometer". Think about the audio output of your motherboard, which's amplification you can control digitally. Kirkhoff's circuit laws are extremely simplifying. An interesting exercise would be to prove the statement we were talking about in the fictional world of "Kirkhoff circuits".