Embibe Experts Solutions for Chapter: Electrostatics, Exercise 1: Level 1

When a number of charged liquid drops coalesce, which of the following quantity does not change?

If two electrons are forced to come closer to each other, the potential energy of the system of $2$ electrons will

The ratio of forces between two small spheres with constant charge in air and in a medium of dielectric constant $k$ is

When distance between two point charges (one positive and the other negative) is halved, then the electrostatic force between the charges will

Two charges are placed a certain distance apart in air. When a dielectric sheet is placed between them, the electrostatic force between them will

A pendulum bob of mass $30.7\times {10}^{-6} \mathrm{kg}$ and carrying a charge $2\times {10}^{-8} \mathrm{C}$ is at rest in a horizontal uniform electric field of $20000 \mathrm{V}/\mathrm{m}$. The tension in the thread of this pendulum is (Take, $g=9.8 {\mathrm{ms}}^2$)

What is the angle between maximum value of potential gradient and equipotential surface?

A  $6\mu F$ capacitor is charged from $10\mathrm{V}$ to $20\mathrm{V}$. Increase in energy will be