magical lifE...........
,
Thursday, 12th of August 2010 04:51:52 AM
The pointy places like the corners will have more charge
magical lifE...........
concentrated there because the electric field will be higher at the
Registered User
points. This is how a lightning rod functions, concentrating the charge
Joined: Friday, 23rd of April 2010, 01:01:41
& intensifying the electric field.
Posts: 915
Viewed 12854 times
The metal surface is at equal potential. Remember the potential near a
spherical surface is proportional to 1/r. The electric field is
proportional to the derivative of the potential, or is proportional to
1/r^2. If the radius of curvature is small, ie pointy surface, then the
electric field is high.