AP EAMCET · PHYSICS · Electrostatics
If the energy stored in a spherical conductor having a charge of \(12 \mu \mathrm{C}\) is 6 J, then the radius of the spherical conductor is
- A 10.8 cm
- B 0.108 cm
- C 1.08 cm
- D 108 cm
Answer & Solution
Correct Answer
(A) 10.8 cm
Step-by-step Solution
Detailed explanation
\( U = \frac{Q^2}{2C} = \frac{Q^2}{2(4\pi\epsilon_0 R)} \) \( R = \frac{Q^2}{8\pi\epsilon_0 U} \) \( R = \frac{(12 \times 10^{-6} \text{ C})^2}{8\pi(8.854 \times 10^{-12} \text{ F/m})(6 \text{ J})} \)…
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