Electricity and magnetism - Equivalent capacitance

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DRAW ALL VERTICAL LINES BRO!!!!!!.........[trivial but gives u correct approach!!!!!]

methodology ...

1. take rightmost bottom side as origin and find the eqxn of the diagonal !!!!

2.this will help u find the height of the diaelecric with varyin x [y = d/a x] [a is side of plate]

3.divide into vertical lines with seperation dx ...

4. dC = edxa/([d/a x/k2] + [d- d/a x]/k1)

5. integrate frm 0 to a ................

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http://targetiit.com/iit_jee_forum/posts/capacitors_2536.html

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Thanks a lot!!

Equivalent capacitance