Write an expression for the flux of the electric field `vecE`, through an area element `triangle vecS`.

Write an expression for the flux Deltaphi , of the electric field vecE through an area of element vecDeltaS

The electric flux through the surface

Write down Maxwell's equation for steady electric field.

Write Biot Savart expression for the magnetic field due to a current element in vector form.

Obtain expression for electric field due to a point charge

A rectangular surface of sides 10cm and 15 cm is placed inside a uniform electric field of 25 V m^-1 , suh that normal to the surface makes an angle of 60^@ with the direction of electric field. Find the flux of the electric field through the rectangular surface.