an infinite plane sheet of positive charge has surface charge density 8.85*10^-10C/m^2. a metallic sphere of mass 1 gm and charge 2C is attached to a thread and tied to a point P on the sheet. the angle made by the string with the plane sheet is
an infinite plane sheet of positive charge has surface charge density 8.85*10^-10C/m^2. a metallic sphere of mass 1 gm and charge 2C is attached to a thread and tied to a point P on the sheet. the angle made by the string with the plane sheet is