AP EAMCET · PHYSICS · Electrostatics
Two charges \(+80 \mu \mathrm{C}\) and \(+20 \mu \mathrm{C}\) are separated by a distance in air. An unknown third charge \(q\) is placed at the centre of the line joining the two charges. If the charges are in equilibrium, then \(q\).
- A \(-20 \mu \mathrm{C}\)
- B \(+20 \mu \mathrm{C}\)
- C \(-10 \mu \mathrm{C}\)
- D \(-4 \mu \mathrm{C}\)
Answer & Solution
Correct Answer
(D) \(-4 \mu \mathrm{C}\)
Step-by-step Solution
Detailed explanation
Given, \(Q_1=+80 \mu \mathrm{C}, Q_2=+20 \mu \mathrm{C}\) Let distance between charges be r. According to question, Since, charges are in equilibrium,…
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