[jamesinnewcastl]

Hi

What an interesting conundrum this zero voltage - but with currents thing.

But it can't happen as it would mean an EMF forcing current one way against a 'flow' of current the other from another EMF. Also either electron motion in the resistor would generate heat and that isn't going to cancel out unless you have generated 'negative' heat.

I can't imagine connecting two hose pipes together and the water forming orderly flows up and down inside the junction!

The answer must be that the currents flow in the other CC generator and NOT in the resistor, the two generators simply do their job pushing their own current through the zero resistance of the other. This requires current flow with no voltage - which is what you get when you short out a CC source with a zero value resistor.

Since a CC generator has no internal resistance you should be able to short CCs of unequal currents and get no voltage across the terminals - connect as many resistors as you like! Connect a TV set, same result.

So you can't make a measurement like that in theory?

Cheers
James