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試卷名稱：112年 - 112 台灣聯合大學系統_碩士班招生考試：普通物理#117881
年份：112年
科目：研究所、轉學考(插大)◆普通物理學
11. Two long, parallel wires, separate by 10 cm. One carries a current of 5.0 A and another carries a current of 10,0 A in the opposite direction. Which of the following statements is true?
(A) In region 1, the magnetic field is into the page and is never zero.
(B) In region 2, the field is into the page and is never zero.
(C) In region 3, the magnetic field is into the page and is never zero.
(D) In region 3, the magnetic field is out of the page and can be zero.
(E) There are no points where the field is zero.
