Question

Work done in taking an electron around a proton in a circular loop is zero. Should the proton necessarily be at the centre of the circular loop?

Answer 1

Answer:

Work done in moving a particle in a circular orbit would always be zero, as the net displacement is zero. The electron needs to revolve around the center of mass of the electron-proton system, which incidentally would be inside the proton itself as the mass of protons is quite high compared to that of electron

Explanation: