On a clear day the electric ?eld in the atmosphere near the earth's surface is 100 N/C, directed vertically downward.
(a) If we adopt the convention that the potential at the earth's surface is 0, what is the potential 100 m above the surface?
(b) What is the potential at the top of Pike's Peak, 14,110 ft above sea level?
(c) What is the potential at the top of a man's head if the man is 2 m tall and is standing?