Question

A spherical conductor with radius of $2m$. What will be the value of capacitance?

• A. $10^{-2}F$
• B. $4\times 10^{-2}F$
• C. $2.2\times 10^{-10}F$
• D. $5\times 10^{-5}F$

Answer 1

Answer: (C)

$C=4\pi {\epsilon }_{0}R$
$\therefore C=\frac{2}{9\times 10^9}=0.22\times 10^{-9}$
$C=2.2\times 10^{-10}F$