Question

U (potential energy)=(k q1 q2)/r=V¬1 (voltage)*q2 ; Ekin = (1/2) m v2

How much energy must a single electron have as it leaves a 1.5 V potential assuming it started from rest?

How fast must that electron be moving as a result?

How much energy can that electron release before it comes to a stop, and why?

Answer 1

The concept used is potential difference , kinetic energy , electrons cannot be stopped because it makes the momentum of the electron zero which leads to the uncertainty ( not defined ) of the location of electron in space as per Heisenberg uncertainty principle.

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