Embibe Experts Solutions for Chapter: Electric Charges and Fields, Exercise 1: Karnataka Board-2018

Give three properties of electric charge.

Three charges each equal to $4nC$ are placed at the three corners of a square of side $2.0 c\mathrm{m}$. Find electric field at the fourth corner.
 

State Coulomb’s Law.

State Gauss's law. Derive an expression for electric intensity at a point outside the uniformly charged shell.

Write the SI unit of electric flux.

State and explain Coulomb's law in electrostatics.

Two point charges $q_A=5 \mu C \mathrm{and} q_B=5 \mu C$ are located at A and B separated by $0.2 \mathrm{m}$ in vacuum. What is the electric field at the midpoint O of the line joining the charges? Take $\frac{1}{4\pi {\epsilon }_o}=9\times {10}^9 {\mathrm{Nm}}^2{\mathrm{C}}^{-2}$.

Two point charges $q_A=5 \mu C \mathrm{and} q_B=5 \mu C$ are located at A and B separated by $0.2 \mathrm{m}$ in vacuum. If a negative test charge $2 nC$ is placed at the midpoint O, what is the force experienced by the test charge?