An electricity and magnetism problem by Vinicius Beserra
Electricity and Magnetism
Level
pending
Determine the potential energy U (r) of a point charge "q" at a point "r" in one elestrostatic field E.
U(r) = -q*E
U(r) = -q
r^2
E
U(r) = -q^2
r
E
U(r) = -q
r
E
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