The resultant capacitance between $A$ and $B$ in the fig. is.....$\mu F$
$1$
$10$
$50$
$1.5$
A total charge $Q$ is broken in two parts $Q_1$ and $Q_2$ and they are placed at a distance $R$ from each other. The maximum force of repulsion between them will occur, when
Which graph shows variation of electric field of a uniformly charged sphere $w.r.t.$ distance $(r)$ from the centre
The plates of a parallel plate capacitor are charged up to $100\,volt$. A $2\,mm$ thick plate is inserted between the plates, then to maintain the same potential difference, the distance between the capacitor plates is increased by $1.6\,mm$. The dielectric constant of the plate is
Two identical charged spherical drops each of capacitance $C$ merge to form a single drop. The resultant capacitance
Two charged spheres of radii $R_1$ and $R_2$ having equal surface charge density. The ratio of their potential is