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Two Large Metal plates of area $1.0$ $m^2$ face each other. They are $5$ $cm$ apart and carry equal and opposite charge on their inner surfaces. If $E$ between the plates is $55$ $N/C$, what is charge on the plates? Neglect edge effects.

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Welcome to Physics.SE! Our FAQ explicitly forbids "Do my homework" type problems. You can ask about basic concepts and there is even a question on meta to help guide you in this. I would also recommend searching the site as we have addressed Gauss's law in several contexts already. – dmckee♦ May 24 '12 at 15:08

closed as off topic by Qmechanic♦, dmckee♦ May 24 '12 at 15:06

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This is blatently homework!

See http://hyperphysics.phy-astr.gsu.edu/hbase/electric/pplate.html for how to work out the capacitance of the plates.

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