Two point charge +9e and +e are at 16 cm away from each other. Where should another charge q be placed between them so that the system remains in equilibrium?

Options

(a) 24 cm from +9e
(b) 12 cm from +9e
(c) 24 cm from +e
(d) 12 cm from +e

Correct Answer:

12 cm from +9e

Explanation:

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