ElectrostaticsHard
Question
A total charge of 20 μC is divided into two parts and placed at some distance apart. If the charges experience maximum Colombian repulsion, the charges should be :
Options
A.5 μC, 15 μC
B.10 μC, 10 μC
C.12 μC, 8 μC
D.
Solution
Let the two charges are q & (20 − q) μC
∴ Fe =
Fe will be max, when
= 0or
= 
(20 − 2q) = 0⇒ ∴ q = 10μC
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