The electric field strength due to a circular loop of charge of radius R are uniform linear density of charge `lambda`, at its centre is proportonal to

The electric field stength due to a circular loop of charge of radius R and linear density of charge lambda at its centre is proportional to:

Find the electric field intensity at the centre of a semi circular arc of radius r, uniformaly charged with a charge q.

The electric field intensity due to a thin infinity long straight wire of uniform linear charge density lambda at O is-

Find the electric field due to an infinitely long cylindrical charge distribution of radius R and having linear charge density lambda at a distance half of the radius from its axis.

Find the electric field due to an infinitely long cylindrical charge distribution of radius R and having linear charge density lambda at a distance half of the radius from its axis.

Find the electric field due to an infinitely long cylindrical charge distribution of radius R and having linear charge density lambda at a distance half of the radius from its axis.

A sphere of charge of radius R has uniform volume charge density. The electric field due to the sphere of charge at a point

Find the electric field at the centre of a uniformly charged semicircular ring of radius R. Linear charge density is lamda