(a)[1]
State the meaning of quantisation of charge.
(b(i))[2]
The charged parallel plates shown in Fig. 7.1 create a uniform electric field between the plates. Outside the space between them, the electric field is zero. A uniform magnetic field is applied in the region between the plates so that a beam of protons passes undeviated between the plates. State and explain the direction of the magnetic field between the plates.
(b(ii))[2]
The magnetic flux density between the plates is now larger. On Fig. 7.1, sketch the route taken by the protons between the plates.