If the capacitance of a metallic sphere

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Target Exam

CUET

Subject

Physics

Chapter

Electrostatic Potential and Capacitance

Question:

If the capacitance of a metallic sphere is $1 μ F$ , then what is the radius of that capacitor?

Options:

10 m

11 cm

1.1 m

9 km

Correct Answer:

9 km

Explanation:

for spherical capacitor, C = $4 π ϵ_{0} R$