- #1
Carcar8
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Homework Statement
http://i39.tinypic.com/qsp1rr.jpg
Determine the magnitude of the electric field at point P.
Homework Equations
lambba=(q/l)
Length of arc = (radius)(radians)
There's another equation with a sin60 in it that gives the answer, but I forgot what it is...
The Attempt at a Solution
I first tried getting lambda by diving the charge 8e-6C by the length of the arc, .418m, then put that in this equation:
[(lambda)/(4piEo)]int(1/r^s) but that didn't give me the right answer, which is 1.49e6 N/C upwards.
I know the answer and most of the information, I just don't know what equation to apply to it.