An electron is moving at a speed of 1.2 x104 m/s in a circular path of radius r = 1.8 cm inside a solenoid. The magnetic field of the solenoid is perpendicular to the plane of the electron’s path.
1) Discover the magnitude of the magnetic field inside the solenoid.
2) Discover the current in the solenoid if the solenoid has 30 turns per cm.