In a hydrogen atom, an electron moves in an orbit of radius  5.0×10−11 m with a speed of 2.2×106 ms−1. The equivalent current is :

11.2×10-11 A 1.9×10-11 A 1.12×10-11 A 0.11×10-11 A

1.12×10-11 A

I= e/T ; T = 2πr/v  r = 5.0×10−11 m ; v = 2.2×106 ms−1 ; e = 1.6 x 10-19 C I = 1.12×10-11 A