Question

4. Write expressions for the following quantities in terms of 0, and d (the new distance between the plates). the magnitude of the electric field between the plates the potential difference between the plates 5. Find (the ratio of the net charge on one plate to the potential difference between the AV plates). How, if at all, would this ratio change if the charge densities on the plates were +2o, and -20e?

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Answer #1

4) Sigma = Charge density

d = Distance between plates

Eo = epsilon naught = 8.854×10^-12 F/m

(a) electric field between two plates E = (Sigma / 2Eo)

(b) potential difference between the plates V = E•d

V = [(Sigma•d)/(2•Eo)]

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