IB Physics. Electron Moving at an Angle to a Magnetic Field

A tutorial sheet for the motion of a charge in a magnetic field is given below.

An electron enters a region of uniform magnetic field of flux density 1.2 × 10-3 T with an initial velocity of 3.0× 107 m s-1 at an angle of 30.0° to the magnetic field.

  1. Describe the path of the electron in the magnetic field.
  2. Find the time taken by the electron to make one complete revolution abiut the magnetic field lines.