A positive charge 'Q' is fixed at a point. A negatively charged particle of mass 'm' and charge 'q' is revolving in a circular path of radius 'r1' with 'Q' as the centre. The work to be done to change the radius of the circular path from r1 to r2 in Joules is

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

Qq4πεo1r1−1r2

14πε0Qq4πεo1r1−1r2

Qq4πεo1r2−1r1

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

W=q1q24πε01r1−1r2

Watch 3-min video & get full concept clarity