point charges 1mc and -2mc are located at (3,2,-1) and (-1,-1,4) respectively. calculate the electric force on a -10nc charge located at (0,3,1) and the electric field intensity at that point.

Electrostatics question based on earthing of spherical shell

an object has a charge of 2c and gains 10^19 electrons. the net chaarge on the object becomes??

A wire with a linear charge density lambda forms a quarter of a cjrclenof radius R and is placed asa shown in thefigure with its centre of curvature at the origin O the electric field at O will be

Find the value of q so that system remains in equilibrium.. figure attached below

Find the value of q so that system remains in equilibrium