Electrostatics Question 90

Question: The radius of a metallic sphere if its capacitance is 1/9F , is [KCET 1999; Pb. PET 2001]

Options:

A) 106m

B) 107m

C) 109m

D) 108m

Show Answer

Answer:

Correct Answer: C

Solution:

C=4πε0R , R=C4πε0

therefore R=(1/9)×9×109=109m



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