Electric Field and Potential at Point P · PhysicsBowl 2016 #33

Physics · electromagnetism

Problem

Given the configuration of three charges, +Q+Q, +Q+Q, and −2Q-2Q, which one of the following choices best represents the direction of the electric field at the point PP and the sign of the electric potential at PP from these charges?
Field Direction at PSign of Electric Potential at P
(A)↘Positive
(B)↖Positive
(C)↘Negative
(D)↖Negative
(E)ZeroZero
[Figure: Three charges arranged with point P marked]

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