Identify the WRONG statement - Vidyadip

MCQ

Identify the $WRONG$ statement

A
The electrical potential energy of a system of two protons shall increase if the separation between the two is decreased.
✓
The electrical potential energy of a proton electron system will increase if the separation between the two is decreased
C
The electrical potential energy of a proton electron system will increase if the separation between the two is increased
D
The electrical potential energy of system of two electrons shall increase if the separation between the two is decreased

✓

Answer

Correct option: B.

The electrical potential energy of a proton electron system will increase if the separation between the two is decreased

b
For similar charge, $PE$ increases with decreases in $r.$ For dissimilar charge $PE$ decreases with decrease in $r.$

As $P.E.\, = \,\frac{{{Q_1}{Q_2}}}{{4\pi {\varepsilon _0}r}}$

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