試卷名稱:110年 - 110 學士後醫學系招生考試:物理及化學#100231
年份:110年
科目:學士後西醫物理及化學
51. A rod of 0.3 m carries a current of I = 48.0 A in the direction shown in the figure and rolls along the rails with a constant speed. A uniform magnetic field of magnitude 0.25 T is directed perpendicular to the rod and the rails. What is the force acting on the rod?
(A) 3.6 N (→)
(B) 2.4 N (←)
(C) 1.2 N (←)
(D) 3.6 N (←)
(E) 1.2 N (→)