When two isolated conductors $A$ and $B$ are connected by a conducting wire positive  charge will flow from :-

Capacitance (in $F$) of a spherical conductor with radius $1\, m$ is

If the capacity of a spherical conductor is $1$ picofarad, then its diameter, would be

A condenser of $2\,\mu F$ capacitance is charged steadily from $0$ to $5$ $Coulomb$. Which of the following graphs correctly represents the variation of potential difference across its plates with respect to the charge on the condenser

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.