S1B - 2022

Tuesday, June 14, 2011

Electric charge density

Suman m.s said...

sir...one doubt in problem follows

The earth has on electric charge that causes an electric field near its surface of the order of 100 vm-1.What is the surface density of charge on earth of earth is a conducting sphere? pls help me 2 solve it

Anish V Rajan said...

Take earth as a conducting sphere of surface charge density (sigma)

Assume total charge that is spread on the surface is Now concentrated on the center. Find Electric field at the surface by usual equation


No comments: