Can anyone help me create a question in Physics based on circuits or electrostat

Question

Can anyone help me create a question in Physics based on circuits or electrostatics or electromagnetism. I need this for a discussion class.I am posting an example below of what kind of question i am looking for:
Imagine an an electron, falling freely under the influence of gravity. Suppose you wanted to apply an external electric* field in order to make the electron fall at a constant velocity. Could this be done? If not, why not? If so, which direction would the electric field have to be applied? Explain your thinking.

Explanation / Answer

Yes it is possible electron is falling down so we have to give him force upwards. for this we will apply electric field in downward direction (because electron moves in opp to electric field) eE = mg

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