An electron moves at the speed of around 17000 m/s in a circular path of radius 1.1 cm in a solenoid. The magnetic field of the solenoid is perpendicular to the plane of electrons path. The permeability of the free space is around 12.56 x 10^-7 Tm/A
Determine the current in the solenoid if it consists of 40 turns/cm. Answer must be in units of mA.