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Subject: NEW easy question?

Date: 01/25/02 at 11:23 AM
Posted by: Mike
E-mail: vklacar@sprint.ca
Message Posted:

In Reply to: Re: This should be an easy question? posted by Mike on 01/24/02 at 5:58 PM:

This is a follow up to my follow up. What I am basicaaly trying to ask is this. I understand that if you place a coil across a permanent magnet you will get an induced voltage on the coil and as it spins its polarity will reverse, i.e. AC :) However what I don't understand is how AC distRibution work, i.e. power grids etc. If the AC neutral wire is grounded to EARTH GROUND. Then how can EARTH GROUND act as the positive when the AC is in its negative cycle. For a potential to exist, there must be one point a concentration of excess electrons ( +ve ) and a point of deficiency of electrons ( -ve ). Now in the negative cycle the neutral, i.e. white wire, i.e. EARTH GROUND, is higher potential then the black wire, i.e. hot and then the current travels the other way. How is this possible? I thought that EARTH GROUND is the ultimate negative plane? I am sure the answer is simple, I am just missing something here.


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