how is electric potential generated in a conductor by the flowing of charges
Answers
BY connecting a electric enery sourcelike an electric cell
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In fact the electric potential, which is commonly called voltage, is not generated by flowing charges (electrons). If that conductor were totally resistance free R = 0, we'd have V = IR = I0 = 0 volts because the electrons are freely flowing without being impeded.
Another way to show it is by assuming V = constant across a wire with resistance R > r. Then the current, the flowing charges, is i = V/R < V/r = I so that i < I. Which means that although the potential remains fixed, as the resistance is lowered, the flow of electrons, the current, increases.
No, voltage is not generated by flowing charges. In fact, just the opposite. Consider two flat parallel plates, with each plate attached to the opposite battery pole of the other. In which case, the electrons rush from the cathode side of the battery and build up on one side, the cathode side, of the two plates.
Once the cathode plate is saturated, no more electrons flow and there is a voltage potential V across the two plates. But, this is important, there is an electric field E across the gap between the two plates. And because E = V/h, where h is the gap distance, there is work potential energy in PE = eV. That is, work can be done on electrons flowing in between two plates with a voltage potential of V. And that's of course is how TV cathode ray tubes work.
But note, the potential V is established after the charges have flowed and saturated the cathode plate. V is not generated by the flowing charges.
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