Embibe Experts Solutions for Chapter: Electrostatics, Exercise 1: CG PET 2019

Two charges of $1\mathrm{\mu C}$ and $5\mathrm{\mu C}$ are placed $4\mathrm{cm}$ apart. The ratio of forces exerted by both the charges on each other will be

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

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, $g=9.8 {\mathrm{ms}}^2$)

The magnitude of electric field intensity $E$ is such that, an electron placed in it would experience an electrical force equal to its weight, is given by

$N$ identical spherical drops charged to the same potential $V$ are combined to form a big drop. The potential of the new drop will be

Two infinite plane, parallel sheets separated by a distance $d$ have equal and opposite charge densities $\sigma$. The electric field at a point between the sheets

If the electric flux entering and leaving an enclosed surface respectively are ${\varphi }_1 \mathrm{and} {\varphi }_2$. then the electric charge inside the surface will be