Verified Solution • 2025–26 Session moderate

QAIPMT-2005-Ph-2548: NEET 2005 Physics - Class 12 AIPMT-2005-Ph-2548 Solution: As per the diagram a point charge +q is placed at the origin O. …

As per the diagram a point charge +q is placed at the origin O. Work done in taking another point charge -Q from the point A [coordinates (0, a)] to another point B is

Multiple Choice Options

A zero
B $\left(\frac{qQ}{4\pi\epsilon_0}\frac{1}{a^2}\right)\cdot\sqrt{2}a$
C $\left(\frac{-qQ}{4\pi\epsilon_0}\frac{1}{a^2}\right)\cdot\sqrt{2}a$
D $\left(\frac{qQ}{4\pi\epsilon_0}\frac{1}{a^2}\right)\cdot\frac{a}{\sqrt{2}}$

Step-by-Step Verified Solution

Work done is equal to zero because the potential of A and B are the same = 1 4 � _ 0 q a No work is done if a particle does not change its potential energy. i.e. initial potential energy = final potential energy.

Related Learning Resources & Exam Preparation

NEET PYQ Question Bank

Browse year-wise authentic previous years' questions with solutions

Authentic CBT Mock Tests

Simulate official exam environment with live timer and percentile scoring