Electrostatics Question 800

Question: If earth is assumed to be a conducting sphere having radius $ R=6400km, $ it’s capacitance will be:

Options:

A) $ 711\mu F $

B) $ 218\mu F $

C) $ 16\mu F $

D) $ 8\mu F $

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Answer:

Correct Answer: D

Solution:

[d] $ C=4\pi {\varepsilon _{0}}R=\frac{1}{9\times 10^{9}}\times 6400\times 10^{3}=711\mu F $



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