問題詳情

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.

參考答案

答案：C
難度：計算中-1
書單：沒有書單，新增