Final answer:
A Hall voltage can be generated on the moving heart of a patient during MRI imaging. This can also affect the wires of a pacemaker, which is why patients with pacemakers are not given MRIs. The Hall voltage generated by the pacemaker wires can interfere with the normal functioning of the pacemaker.
Step-by-step explanation:
During MRI imaging, a Hall voltage can be generated on the moving heart of a patient. This is because the heart is a conductor moving through a magnetic field created by the MRI machine.
The Hall effect occurs when a conductor with a current flowing through it experiences a perpendicular magnetic field, resulting in a voltage across the conductor's width. Similarly, the wires of a pacemaker can also generate a Hall voltage when exposed to the same magnetic field.
However, the reason patients with pacemakers are not given MRIs is because the Hall voltage generated by the pacemaker wires can interfere with the normal functioning of the pacemaker. The strong magnetic field in an MRI can cause the pacemaker to malfunction, leading to serious health risks for the patient.