Motion of charged particle and Velocity selector and Mass spectrometer (id: 6854

本题目来源于试卷: Motion of charged particle and Velocity selector and Mass spectrometer，类别为 美国物理杯赛(Physics Bowl)

[单选题]
08.36: An electron moves in the pl,o p/4s3ckmy)*u zbneane 3x; fb;k2xosqzv*0mzof the page through two regions of space along themxk;; 2xzo z0f3 s*bvq dotted-line trajectory shown in the figure. There is a uniform electric field in Region I directed into the plane of the page (as shown). There is no electric field in Region II. What is a necessary direction of the magnetic field in regions I and II?
Ignore gravitational forces.

A. Region I is Down the plane of the page Region II is Up the plane of the page
B. Region I is Up the plane of the page Region II is Into the plane of the page
C. Region I is Up the plane of the page Region II is Out of the plane of the page
D. Region I is Down the plane of the page Region II is Out of the plane of the page
E. Region I is Into the plane of the page Region II is Up the plane of the page


参考答案:  C


本题详细解析: 暂无

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