本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
A beam of electrons is accelerated through a potential differenci8ba6c9 fg( im.l gi u5lqwp88 v2p)sge of 10 kV before entering a velocity selector. If the B-field of the velocity selector has a val.5g88q) uv2pgliwlsp ue of 0.010 T, what value of the E-field is required if the particles 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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