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September 2, 2015

Homework Help: Physics 1112 Electric charge

Posted by Sar on Saturday, August 21, 2010 at 9:51pm.

As shown in the figure, a square has sides of 8.0 cm with a charge of +6.0 C at one corner (a) and with charges of -2.0 C at the remaining three corners (b, c, and d).
The figure is just a square with no measurements. Corner a being the top left corner, corner b top right corner, corner d is bottom left, and corner c is bottom right.

Find the electric field at the center of the square.
___ N/C towards corner C.

I've tried working this problem out a few ways. Like using (8.99e9)(6.0e-6)/8.0cm
&
(8.99e9)(2.0e-6)/8.0cm
I get answers ranging from 5.3e8 N/C to 11.22 N/C.
Any suggestions?

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