Tue April 17, 2012 By: Devansh Tiwari

What is the force between two poitn charges q1 and q2 which have two medium between them with permittivity k1 and k2.

Expert Reply
Mon April 23, 2012
The net permitivity constant = 1/k1 + 1/k2
So net constant k = k1 k2/ (k1+ k2)
Force = k1 k2/(k1+k2) q1 q2/ r2
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