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Alright, I heard that DC current flows from negative to postive, but a car battery flows from postive to negative. Is this correct or is it neg. to pos. on both?

2006-11-14 04:37:00 · 3 answers · asked by x000794293 2 in Cars & Transportation Maintenance & Repairs

Not to be rude Renacuajo, but your "answer" didn't realy answer my question. I looked it up in a text book...
"Approximately 200 years ago, scientists arbitrarily theorized that electricity flowed from positive to negative." -Conventional current flow theory - THIS WAS NEVER PROVEN
"as our knowledge of science progressed, and with the discovery of the atom and semi conductor electronics, it became apparent that the conventional current flow theory was INCORRECT.
"It is widely accepted that it is the electrons that actuall move, flowing from Negative to Positive, NOT from positive to negative. This newer theory is known as electron flow theory. The emergence of this new theory caused a controversy that is still in existence today."
"The important point is that the correct polarity must be maintained when building circuits with devices that require a definite polarity."

Thanks for your help but it looks like there is no Right answer as long as the circuit is hooked up properly

2006-11-14 06:29:21 · update #1

3 answers

Electricity will flow the same way in any circuit, including a car.

Out of wikipedia...
For historical reasons, electric current is said to flow from the most positive part of a circuit to the most negative part. The electric current thus defined is called conventional current. It is now known that, depending on the conditions, an electric current can consist of a flow of charged particles in either direction, or even in both directions at once. The positive-to-negative convention is widely used to simplify this situation. If another definition is used - for example, "electron current" - it should be explicitly stated

2006-11-14 05:44:08 · answer #1 · answered by Wrenchmeister 3 · 0 0

Negative to positive. It was actually old Ben Franklin that guessed wrong. Electrons have a negative charge. The negative pole has a surplus of electrons and the positive pole a deficiency of them, so the electrons head for the positive.

2006-11-14 18:08:20 · answer #2 · answered by Nomadd 7 · 0 0

positive adds
neg takes away

2006-11-14 12:48:12 · answer #3 · answered by duster 6 · 0 1

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