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Solution


Q.

A charge of 4 μC is to be divided into two parts. The distance between the two divided charges is constant. The magnitude of the divided charges so that the force between them is maximum, will be:
1 1 μC and 3 μC  
2 2 μC and 2 μC  
3 0 and 4 μC  
4 1.5 μC and 2.5 μC  

Ans.

(2)

f∝q1q2