Electrostatics

Question: A total charge Q is broken in two parts \[{Q_1}\] and \[{Q_2}\] and they are placed at a distance \[R\] from each other. The maximum force of repulsion between them will occur, when

1) \[{Q_2} = \frac{Q}{R},\;{Q_1} = Q - \frac{Q}{R}\]

2) \[{Q_2} = \frac{Q}{4},\;{Q_1} = Q - \frac{{2Q}}{3}\]

3) \[{Q_2} = \frac{Q}{4},\;{Q_1} = \frac{{3Q}}{4}\]

4) \[{Q_1} = \frac{Q}{2},\;{Q_2} = \frac{Q}{2}\]

Solution:

Explanation: 4e

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