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10. The point P lies along the perpendic..-阿摩線上測驗
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10. The point P lies along the perpendicular bisector of the line connecting two long straight wires S
and T that are perpendicular to the page. A set of directions A through H is shown next to the
figure. When the two equal currents in the wires are directed up out of the page, the direction of
the magnetic field at P is closest to the direction of ______.
(A) A
(B) E
(C) F
(D) G
(E) H