本题目来源于试卷: 美国2021年物理杯赛真题 PHYSICS BOWL 2021，类别为 美国物理杯赛(Physics Bowl)
[单选题]
n the Millikan oil-drop experiment the UPWARD force on a stationary oil drop is due to the:
A. gravitational and electric fields
B. gravitational field and the charge on the drop
C. electric field only
D. electric field and the charge on the drop
E. charge on the drop only
参考答案: D
本题详细解析:
There is force provided by the electric field on the charged drop.
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