AP EAMCET · PHYSICS · Electrostatics
Two conducting spheres of radii \(9 \mathrm{~cm}\) and \(1 \mathrm{~cm}\) are separated by a distance of \(20 \mathrm{~cm}\) in free space. If the spheres are charged to same potential of \(10 \mathrm{~V}\) each, the force of repulsion between them is
- A \(\frac{4}{9} \times 10^{-9} \mathrm{~N}\)
- B \(\frac{10^{-9}}{4} \mathrm{~N}\)
- C \(\frac{10^{-9}}{3} \mathrm{~N}\)
- D \(4 \times 10^{-9} \mathrm{~N}\)
Answer & Solution
Correct Answer
(B) \(\frac{10^{-9}}{4} \mathrm{~N}\)
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