Capacitance (in $F$) of a spherical conductor with radius $1\, m$ is
$1.1 \times {10^{ - 10}}$
${10^{ - 6}}$
$9 \times {10^{ - 9}}$
${10^{ - 3}}$
What is capacitor ? And explain capacitance. Give its $\mathrm{SI}$ unit.
$64$ drops each having the capacity $C$ and potential $V$ are combined to form a big drop. If the charge on the small drop is $q$, then the charge on the big drop will be
A spherical capacitor consists of two concentric spherical conductors, held in position by suitable insulating supports (Figure). Show that the capacitance of a spherical capacitor is given by
$C=\frac{4 \pi \varepsilon_{0} r_{1} r_{2}}{r_{1}-r_{2}}$
where $r_{1}$ and $r_{2}$ are the radii of outer and inner spheres, respectively.
The capacity of a spherical conductor in $ MKS$ system is
The capacitance of a metallic sphere will be $1\,\mu F$, if its radius is nearly