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(i) Use Gauss's law to find the electric...

`(i)` Use Gauss's law to find the electric field due to a uniformly charged infinite plane sheet. What is the direction of field for positive and negative charge densities?
`(ii)` Find the ratio of the potential differences that must be applied across the parallel and eries combination of two capacitors `C_(1)` and `C_(2)` with their capacitances in the ratio `1 : 2` so that the energy stored in the two of two capacitors `C_(1)` and `C_(2)` with their capacitances in the ratio `1 : 2` so that the energy stored in the two cases becomes the same.

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