As an electron moves in the direction of the electric field lines... Answer: It is moving...

As an electron moves in the direction of the electric field lines...

Answer: It is moving from high potential to low potential and gaining electric potential energy.

Can someone explain why the electron is gaining electric potential energy if it is moving from high to low potential energy?

Expert Solution

normally the electrons are move from low potential to high potential because every particle wants to be stable or to minimise their potential energy.
(An electron with negative change lying at a distance (x) from a positive plate (+Q) potentails PE = - k Q e/x say this value ( = - 10 units) .... suppose as a contradiction electron RUNS away from plate, then (x) will increase, say reaches (2x) .... PE = - 10/2 = - 5 units ........... [- 5 > - 10 ] ......... so in this contradiction electron increases its "energy" ..... this physics denies ........ so electron has the sole option to run towards the plate to minimise its energy)

Now as qeustion says when electron moves from higher to low potential (opposite to normal) it need work to done it for moving it. their is always work energy theorem & energy conservation applies so as we done work, this work will convert or store in form of potential energy of electron.

genius_generous answered 1 day ago

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