Four dipoles having charge $ \pm e$ are placed inside a sphere. The total flux of ${\vec E}$ coming out of the sphere is 

  • A

    zero

  • B

    $\frac{{4e}}{{{\varepsilon _0}}}$

  • C

    $\frac{{8e}}{{{\varepsilon _0}}}$

  • D

    $\frac{{10e}}{{{\varepsilon _0}}}$

Similar Questions

Charge $q$ is uniformly distributed over a thin half ring of radius $R$. The electric field at the centre of the ring is

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

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

A charged particle with charge $q$ and mass $m$ starts with an initial kinetic energy $K$ at the centre of a uniformly charged spherical region of total charge $Q$ and radius $R$. Charges $q$ and $Q$ have opposite signs. The spherically charged region is not free to move and kinetic energy $K$ is just sufficient for the charge particle to reach boundary of the spherical charge. How much time does it take the particle to reach the boundary of the region?

For shown situation of two dipoles the nature of forces between them are