Assume that a stationary electron is a point of charge.
Chapter , Problem 35(choose chapter or problem)
Assume that a stationary electron is a point of charge. What is the energy density u of its electric field at radial distances (a) r ! 1.00 mm, (b) r ! 1.00 mm, (c) r ! 1.00 nm, and (d) r ! 1.00 pm? (e) What is u in the limit as r : 0?
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