Calculate the force acting on a test charge due to a continous linear charge distribution.

Calculate the force acting on a test charge due to a continous volume charge distribution.

Estimate the force acting on a test charge due to (i) a linear distribution ,(ii) a surface distribution and (iii) a spatial distribution of charges .

Calculate the force acting on a current carrying conductor in magnetic field.

Does any force act on a moving charge in a magnetic field?

Calculate the charge of 1 mol electron.

Calculate the force of repulsion acting between two positive charges of magnitude 20 esu and 30 esu when they are kept at a distance of 2 cm in air.

A mangnet and a charged particle are placed near each other. State whether a force will act on the charged particle if the magnet is moving but the charged particle is at rest,

Two point electric charges of values q and 2q are kept at a distance d apart from each other in air. A third charge Q is to be kept along the same line in such a way that the net force acting on q and 2q is zero. Calculate the position of charge Q in terms of q and d.

Find the electric field and potential at the centre of curvature of a uniformly charged semicircular rod of radius R with a total charge Q in SI. lambda is the linear charge density.