Embibe Experts Solutions for Chapter: Electrostatics, Exercise 1: Tamilnadu Board-2018

Write any five application of superconductors.

Derive an expression for electric field intensity due to an electric dipole at a point on its axial line.

The magnitude of electric intensity at a distance $\text{'}\mathrm{r}\text{'}$ from the centre of an electric dipole along its axial line is $\mathrm{E}$. The distance of the point from the centre of the electric dipole along its equatorial line at which the electric intensity has the same value $\mathrm{E}$ is:

Which of the following devices does not allow d.c to pass through?

Point charges $1 \mathrm{\mu C}$ and $6 \mathrm{\mu C}$ are placed in air at a certain distance apart. The magnitude of the force on $1 \mathrm{\mu C}$ by $6 \mathrm{\mu C}$ is ${\mathrm{F}}_1$. The magnitude of the force on $6 \mathrm{\mu C}$ by $1 \mathrm{\mu C}$ is ${\mathrm{F}}_2$. Then ${\mathrm{F}}_1:{\mathrm{F}}_2$ is:

Define electric dipole moment. Give its unit.

Write the properties of electric lines of forces.

Derive an expression for electric field intensity due to an electric dipole at a point on its axial line.

5 marks