試卷名稱:114年 - 114 台灣聯合大學系統_碩士班招生考試:普通物理#137733
年份:114年
科目:研究所、轉學考(插大)◆普通物理學
15. A solenoid is wound with 1200 turns on5.0 cm ↓ a cylindrical form 5.0 cm in diameter and 60 cm long. The windings carry a current I in the direction shown in the diagram. The current produces a magnetic field of magnitude 5.2 mT near the center of the solenoid. Calculate the current I in the solenoid windings. Use
T m/A.

(A) 1.69 A
(B) 2.07 A
(C) 3.64 A
(D) 4.02 A
(E) 5.53 A U