Magnetic Fields - Structured Questions

Q2. The diagram below shows the path of protons in a proton synchrotron.

The protons are injected at a speed of 1.2 × 10⁵ ms^–1 and a magnetic field is applied to make them move in a circular path.

(a) Calculate the magnetic flux density of the field required for protons to move in the circular path when their speed is 1.2 × 10⁵ ms^–1.

(b) Explain how the magnetic flux density required to maintain the circular path has to change as the kinetic energy of the protons increases.

 

(5 marks)