本题目来源于试卷: Physics Unit17: Electric Potential，类别为 通用国际物理
[单选题]
Two parallel plates, separ;e vm5:qvw0c c7ss,f uated by 0.20 8(fot+ lvk 3vt-nnq5.kxw o+ym, are connected to a 12-V battery. An electron releasedvo+xtn .ln qwk+5- ov t38y(fk from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 0.050 m from the positive plate, how much kinetic energy does the electron gain?
A. $2.4 \times 10^{-19} \; J$
B. $4.8 \times 10^{-19} \; J$
C. $7.2 \times 10^{-19} \; J$
D. $9.6 \times 10^{-19} \; J$
参考答案: B
本题详细解析:
暂无
| 
