本题目来源于试卷: Physics Unit20: Magnetism，类别为 国际高中通用物理
[单选题]
A beam of electrons is accelerated through a potential diyo1m+9:ah ojky7zdx i:(t r5 ifference .z0ym d1osd16zcty rdj8dw(3 of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-field is required if the part yzsd8dj.w(t1or 63 yz01dmcdicles are to be undeflected?
A. $2.3 \times 10^{3} \; V/m$
B. $5.9 \times 10^{5} \; V/m$
C. $6.0 \times 10^{5} \; V/m$
D. $7.2 \times 10^{6} \; V/m$
参考答案: B
本题详细解析:
暂无
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