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7. What happens to a current carrying wire in a magnetic field if the current is
reversed?
8. State whether an alpha particle will experience any force in a magnetic field if
(alpha particles are positively charged particles)
a) it is placed in the field at rest.
b) it moves in the magnetic field parallel to field lines.
c) it moves in the magnetic field perpendicular to field lines.
Justify your answers in each case.
