The electron in an hydrogen atom moves in a circular orbit of radius 5 x 10-11 m with a speed of 0.6π x 106 m / s , then
(1) The frequency of the electron is 3 x 1015 revolutions
(2) The electron carries 3.2 x 10-19C charge around the loop
(3) The current in the orbit is 0.96 mA
(4) The current flows in the same direction in which electrons move
