When a beam of ions each carrying a charge of 3.2 × 10-19 C and of mass 3.3 × 10-27 kg are accelerated through a PD of 2.0kV to enter an evacuated region in a direction at right-angles to a uniform magnetic field. The beam is observed to be deflected into a circular path of radius 9.4cm. Draw a diagram showing the path taken by the beam in the field. Indicate clearly the direction of the magnetic field you consider. Explain how you arrived at your diagram. Explain why the path is circular. What would have been the shape of the ions' path in the same field if they had entered the field with a uniform deceleration and in the same direction as before? Explain your answer.

When a beam of ions each carrying a charge of 3.2 × 10-19 C and of mass 3.3 × 10-27 kg are accelerated through a PD of 2.0kV to enter an evacuated region in a direction at right-angles to a uniform magnetic field. The beam is observed to be deflected into a circular path of radius 9.4cm. Draw a diagram showing the path taken by the beam in the field. Indicate clearly the direction of the magnetic field you consider. Explain how you arrived at your diagram. Explain why the path is circular. What would have been the shape of the ions' path in the same field if they had entered the field with a uniform deceleration and in the same direction as before? Explain your answer.