Electronic Field Due To A Point Charge

Let there be a point charge of Q coulombs placed at the centre of an imaginary sphere of radius r metes. The electric intensity at any point on the surface is given by

The direction of this electric field intensity is normal to the surface of the sphere at that point.

Though the number of lines of force crossing the sphere at that point are infinite but practically the tubes of force crossing per unit cross-section area is (    ) times the field intensity at that point or tubes of force per unit area.

Surface area of sphere = 4( )
Therefore, total number of tubes of force emanated from charge Q

Hence the flux emanating from any charge is equal to its strength in coulombs.

∈

For more help in Electronic Field Due To A Point Charge click the button below to submit your homework assignment