Question

Capacitance (in F) of a spherical conductor with radius 1m is
A. `1.1 xx 10^(-10)`
B. `10^(-6)`
C. `9xx10^(-9)`
D. `10^(-3)`

Answer 1

Correct Answer - A
Capacitance of spherical conductor `= 4pi in_(0)a` where a is radius of conductor
Therefore `C = (1)/(9xx10^(9)) = (1)/(9)xx10^(-9)`
`= 0.11 xx 10^(-9)F = 1.1 xx 10^(-10)F`