A) 90 m
B) 900 m
C) 9000 m
D) zero
Correct Answer: B
Solution :
The capacity of spherical conductor \[C=4\pi {{\varepsilon }_{0}}a\] \[C=\frac{C}{4\pi {{\varepsilon }_{0}}}\] \[=9\times {{10}^{9}}\times 0.1\times {{10}^{-16}}\] \[=900m\]
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