The value of electric potential at any point due to any electric dipole is
$k.\frac{{\mathop p\limits^ \to \times \mathop r\limits^ \to }}{{{r^2}}}$
$k.\frac{{\mathop p\limits^ \to \times \mathop r\limits^ \to }}{{{r^3}}}$
$k.\frac{{\mathop p\limits^ \to .\mathop r\limits^ \to }}{{{r^2}}}$
$k.\frac{{\mathop p\limits^ \to .\mathop r\limits^ \to }}{{{r^3}}}$
Two equal $-ve$ charges $-q$ are fixed at the points $(0, a)$ and $(0, -a)$ on the $y-$ axis. A positive charge $Q$ is released from rest at the point $(2a, 0)$ on the $x-$ axis. The charge will
An electric dipole is placed along the $x$ -axis at the origin $O.$ A point $P$ is at a distance of $20\, cm$ from this origin such that $OP$ makes an angle $\frac{\pi}{3}$ with the $x$ -axis. If the electric field at $P$ makes an angle $\theta$ with the $x$ -axis, the value of $\theta$ would be
A charge $q$ is placed at the centre of cubical box of side a with top open. The flux of the electric field through one of the surface of the cubical box is
A $2\,\mu F$ capacitor is charged as shown in the figure. The percentage of its stored energy dissipated after the switch $S$ is turned to position $2$, is.....$\%$
A parallel plate capacitor has a uniform electric field $E$ in the space between the plates. If the distance between the plates is $d$ and area of each plate is $A$ , the energy stored in the capacitor is