First slide

Potential energy

Question

When one electron is taken towards the other electron, then the electric potential energy of the system

Easy

A

decreases
B

increases
C

remains unchanged
D

becomes zero

Solution

Potential energy of the system will be given by $= \frac{(- e) (- e)}{4 {πε}_{0} r} = \frac{e^{2}}{4 {πε}_{0} r}$
As r decreases, potential energy increases.

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