試卷名稱:113年 - 113 國立臺灣大學_碩士班招生考試:普通物理學#118903
年份:113年
科目:研究所、轉學考(插大)◆普通物理學
18. A particle with charge 9 and mass m is shot with kinetic energy K into the region between two plates as shown in Figure 9. If the magnetic field between the plates is B and as shown, how large must B be if the particle is to miss collision with the opposite plate?

(A) B = (2mK)1/2/qd,
(B) B = (2mK)1/2/2qd,
(C) B=(4mK)1/2/3qd,
(D)B=(3mK)1/2/2qd,
(E) B=(mK)1/2/qd.