33. A stationary negative electric charge is shown below between the poles of a stationary horseshoe
magnet. The magnetic force on the charge 
(A) zero
(B) points downward
(C) points into the paper
(D) points out of the paper

(A) zero
(B) points downward
(C) points into the paper
(D) points out of the paper
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統計: A(1), B(0), C(0), D(3), E(0) #874936
統計: A(1), B(0), C(0), D(3), E(0) #874936