On Fri, 06 Jan 2012 13:30:15 -0000, Clive George wrote:

On 06/01/2012 12:59, Graham. wrote:
On Fri, 06 Jan 2012 12:33:55 -0000, "Lieutenant
wrote:

http://petersphotos.com/temp/pool.jpg

That is my crude drawing of a swimming pool. There are four wires hanging in the pool. L1 and N1 are live and neutral from an isolating transformer. L2 and N2 are live and neutral from another isolating transformer. Both are identical transformers. If you turn ONE of them on, then the current obviously flows diagonally across the pool. But what if you turned both on? Do they care whose electrons they get back? Can't electricity flow across the two short ends of the pool to lower the resistance? If not why not?

Assuming your isolating transformers are perfect and have no
capacitive reactance between windings then there will be zero
interaction between the two circuits.

If we replace the swimming pool with a set of resistors (6 should be
adequate to model the various possible current paths), and the
transformers with a pair of batteries, does that change your answer?

Now I've got two conflicting answers.....

Continue to discuss.....

PS You really need to use the occasional line break.

That's one of the less annoying habits of the OP...

On mine it wraps to window :-P But let's not start that AGAIN!

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Condoms aren't completely safe. A friend of mine was wearing one and got hit by a bus.