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Aug 3, 2020 at 15:05 comment added P2000 Thank you for your answer, Mohammad. Maybe I should clarify that the rod is fixed in space, and I am interested in the voltage, not the motion or forces. You write "has accumulated the positive and negative charges" which is the question. Has it? And if so, how is it calculated?
Aug 3, 2020 at 7:09 history answered Mohammad Javanshiry CC BY-SA 4.0