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20 Mar 2008 12:45:32 IST

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an HCV problem- a capacitor has given charge +Q1 to one plate & -Q2 to anther.

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an HCV problem- a capacitor has given charge +Q1 to one plate & -Q2 to anther. what is net charge of the capacitor?

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suresan

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Joined: 10 Mar 2008

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20 Mar 2008 14:37:11 IST

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C = Ae/d = 2Qe/d(s1 + s2) where e is permitivity(epsilon zero), s1 and s2 are charge densities on each plate.
Then Charge Q = (s1 + s2)A/ 2
that is Q = (Q1 + Q2)/2
This solution is based on the assuption that both the plates are having the same area A.

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