Suman m.s said...
sir...one doubt in problem follows
Anish V Rajan 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
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