An electron is released at rest from point a. it moves in response to the electric field of a fixed charge distribution along a path that takes it through point b. if the potential has a value of -11 v at point a and 25 v at point b, what is the electron's speed as it passes point b?

Explanation:

An electron is released at rest from point A. It moves in response to the electric field of a fixed charge distribution along a path that takes it through point B.

Potential at point A,

Potential at point B,

Let v is the speed of the electron as it passes point B. It can be calculated using the conservation of energy theorem as :

Here, u = 0

m is the mass of electron

So, the electron's speed as it passes point B is . Hence, this is the required solution.

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