electric field due to plane sheet

Asked by venkat | 27th Jun, 2013, 07:03: PM

Expert Answer:

When you write the gauss law, which states that for a conductor
 
Qenclosed = integral (E.dA)
then, since the direction of the electric field due to the infinite plane sheet would be perpendicular to it always, so the E.dA = 0 as E and dA would be perpendicular to one another for the infinite sheet. (dot product of 2 perpendicular vectors = 0)
 
However, at the ends of the cylinder, the E.dA = EA as E and A would have the same direction. 

Answered by  | 30th Jun, 2013, 12:09: AM

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