Answer to Question #328138 in Electricity and Magnetism for Nel

Question

11– 20. A hydrogen atom consists of a single proton and a single

electron. The proton has a charge of +e and the

electron has −e. In the “ground state” of the atom, the electron orbits

the proton at most probable distance of

7.48 × 10−11 m (as shown in the figure below). Calculate the electric

force on the electron due to the proton?

Answer 1

$F=\frac{ke^2}{r^2}=41.2~nN.$