NCERT Solutions for Chapter: Electric Charges and Fields, Exercise 1: MCQ

In figure two equal positive charges ${\mathrm{q}}_2$and ${\mathrm{q}}_3$ fixed along the $\mathrm{y}$ axis, exert a net electric force in the $+\mathrm{x}$ direction on a negative charge $-{\mathrm{q}}_1$ fixed along the $\mathrm{x}$ axis. If a positive charge $\mathrm{Q}$is placed at$(\mathrm{x}, 0)$, the force on ${\mathrm{q}}_1$ 

A positive point charge is brought near an isolated conducting sphere. The electric field is best given by which diagram ?

The Electric flux through the given surfaces-

Five charges ${\mathrm{q}}_{1,}{\mathrm{q}}_{2,}{\mathrm{q}}_3,{\mathrm{q}}_4$ and ${\mathrm{q}}_5$ are fixed at their positions as shown in figure $\mathrm{S}$ is a Gaussian surface. Gauss’s law is given by ${\oint }_S\overrightarrow{\mathrm{E}}.\overrightarrow{\mathrm{ds}}=\frac{\mathrm{q}}{{\mathrm{\epsilon }}_0}$. Which of the following statements are correct?

The figure shows electric field lines in which an electric dipole $\mathrm{p}$ is placed as shown. Which of the given statement is correct ?

A point charge $+\mathrm{q}$, is placed at a distance $\mathrm{d}$ from an isolated conducting plane. The field at a point $\mathrm{P}$on the other side of the plane is-

A positive charge is uniformly distributed on a hemisphere. The electric field at a point on a diameter away from the centre is directed-