A cube of side length $‘l’$, encloses a charge $‘q’$ placed at its centre as shown in the figure. What is the flux linked with one face of the cube? The plane of a square of side $10 \mathrm{cm}$ makes an angle of $30°$ with the direction of an electric field, whose magnitude is $4\times {10}^3 \mathrm{N}/\mathrm{C}$. Determine the flux through the square.

With the help of a diagram, obtain an expression for the electric field at a point outside a charged thin spherical shell. The figure shows four positively charged particles. A Gaussian surface enclosesq1  and q2  :

What is the net electric flux through the Gaussian surface ?

With the help of a diagram, obtain an expression for the electric field at a point outside a charged thin spherical shell. The figure shows four positively charged particles. A Gaussian surface enclosesq1  and q2  :

Which of the particles shown, contribute to the electric field at point P on the surface.

With the help of a diagram, obtain an expression for the electric field of an electric dipole at a point on its equatorial plane. The figure shows an electric dipole placed along the X-axis in an external non-uniform electric field, increasing in + x-direction

 What is the direction of the force experienced by the charge $(-q)$ ?

With the help of a diagram, obtain an expression for the electric field of an electric dipole at a point on its equatorial plane. The figure shows an electric dipole placed along the X-axis in an external non-uniform electric field, increasing in + x-direction

What is the direction of the net force experienced by the dipole ?