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SAT® Subject Test in Physics

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Moderate

Opposite Charge Circular Symmetry

SATPHY-741KLO

Three positive (red) and three negative (blue) point charges are arranged symmetrically around a circle centered on point P as shown in the diagram below. All point charges are of the same magnitude.

Which table gives the best description of the electric field at point P and the electric potential at point P?

A
Electric Field at P zero
Electric Potential at P zero
B
Electric Field at P downward
Electric Potential at P downward
C
Electric Field at P upward
Electric Potential at P positive
D
Electric Field at P downward
Electric Potential at P zero
E
Electric Field at P upward
Electric Potential at P zero