Manipal MET2013PhysicsElectrostatics
An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r . The coulomb force F between the two is
Options
- Ak e^2 r^3 r
- B-k e^2 r^3 r
- Ck e^2 r^2 r
- D-k e^2 r^2 r
Correct answer
B. -k e^2 r^3 r
Step-by-step solution
F =- 1 4 ₀ q₁ q₂ r^2 = r aligned & F =-k q₁ q₂ r^2 = r & F =-k e e r^2 r =-k e^2 r^2 r & r = r | r | = r r & F=-k e^2 r^2 r r =-k e^2 r^3 r aligned