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試卷名稱：114年 - 114 學士後醫學系招生考試試題：物理及化學#126679
年份：114年
科目：學士後西醫物理及化學
38. A technician wearing a brass bracelet enclosing area 0.005 m2 places her hand in a solenoid whose magnetic B-field is 7.0 T directed perpendicular to the plane of the bracelet. The resistance R around the bracelet’s circumference is 0.02 Ω. An unexpected power failure causes the field to drop to 1.5 T in a time interval of 20 ms. Estimate the power delivered to the bracelet.
(A) 23.6 W
(B) 31.5 W
(C) 47.3 W
(D) 63.1 W
(E) 94.6 W
