Electrostatics

Related Questions

• An electric dipole of moment $p$is placed at the origin along the $x$-axis. The electric field at a point $P$, whose position vector makes an angle$\theta $with the $x$-axis, will make an angle ..... with the $x$-axis, where $\tan \alpha = \frac{1}{2}\tan \theta $

  ---

• Two charges of $4\mu C$ each are placed at the corners A and B of an equilateral triangle of side length 0.2 m in air. The electric potential at C is $\left[ {\frac{1}{{4\pi {\varepsilon _0}}} = 9 \times {{10}^9}\frac{{N{\rm{ - }}{m^2}}}{{{C^2}}}} \right]$

  ---

• A glass rod rubbed with silk is used to charge a gold leaf electroscope and the leaves are observed to diverge. The electroscope thus charged is exposed to X-rays for a short period. Then

  ---

• Three equal charges are placed on the three corners of a square. If the force between \[{q_1}\] and \[{q_2}\]is \[{F_{12}}\] and that between \[{q_1}\]and \[{q_3}\] is \[{F_{13}}\], the ratio of magnitudes \[\frac{{{F_{12}}}}{{{F_{13}}}}\] is

  ---

• When one electron is taken towards the other electron, then the electric potential energy of the system

  ---