3×10–8 N / 9 11 ×10–31 kg = 2 5 × 1022 m/s2
Comparing this with the value of acceleration due to gravity, we
can conclude that the effect of gravitational field is negligible on
the motion of electron and it undergoes very large accelerations
under the action of Coulomb force due to a proton The value for acceleration of the proton is
2