WBJEE · Physics · Electrostatics
Two point charges \(+\mathrm{q}_{1}\) and \(+\mathrm{q}_{2}\) are placed a finite distance ' \(\mathrm{d}\) ' apart. It is desired to put a third charge \(\mathrm{q}_{3}\) in between these two charges so that \(\mathrm{q}_{3}\) is in equilibrium. This is
- A possible only if \(q_{3}\) is negative.
- B possible only if \(\mathrm{q}_{3}\) is positive.
- C possible irrespective of the sign of \(q_{3}\).
- D not possible at all.
Answer & Solution
Correct Answer
(C) possible irrespective of the sign of \(q_{3}\).
Step-by-step Solution
Detailed explanation
At null point \(\vec{E}=0\) \(\therefore\) any charge placed at that point will remain in equilibrium.
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