Physics -- Drawing Electric Field Lines

The electric field is defined as the force per unit charge exerted on a small positive test charge placed at that point. The rules for drawing electric field lines for any static configuration of charges are

The lines begin on positive charges and terminate on negative charges.
The number of lines drawn emerging from or terminating on a charge is proportional to the magnitude of the charge.
No two field-lines ever cross in a charge-free region. (Because the tangent to the field line represents the direction of the resultant force, only one line can be at every point.)
The line approaches the conducting surface perpendicularly.

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Posted by IrritatedlySeeking MAY 20, 2009 | 08:59PM
This is completely useless to me. Drawing field lines involves drawing lines...what determines where they are in space!? You mention the tangent of the line at the surface and charge...but nothing of its shape.

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Posted by andrew JUNE 02, 2009 | 09:31PM
ya this is retarded

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Posted by Wanting answers JULY 07, 2009 | 06:03PM
This isn't very helpful in anyway. It's a bunch of big, meaningless words put together to sound good. People avoid Physics for a reason. This subject is for the clinically depressed who don't have a life.

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Posted by kika NOVEMBER 18, 2009 | 02:40AM
should have given some examples of drawings

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