本题目来源于试卷: Fields D.2 Electromagnetic Fields & Potential，类别为 IB物理学
[单选题]
An electron is released6lh)nf r s69q5+klcsh from the negative platef6xk; t,--i9 x7 yqsbgmg 3wcd of two oppositely charged parallel plates placed a fixed distance apart. The potential difference between the two plates is V, and the electron reaches the positive pl6 xk,3b97i-;s-wxqgdg y m tfcate with a speed v.
What would be the final speed of the electron if the distance between the plates remained the same, but the potential difference between them were doubled?
A. v$\sqrt{2}$
B. 2v
C. $\frac{v}{2}$
D. $v$
参考答案: A
本题详细解析:
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