A positron emitted from a decay enters a region of uniform magnetic field that is…
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Magnetism and Electromagnetism · Magnetism and Electromagnetism
Problem
A positron emitted from a β+ decay enters a region of uniform magnetic field that is perpendicular to its velocity. An electron of the same speed enters the same field at the same angle. Which of the following comparisons between the magnitudes and directions of the resulting magnetic forces is most accurate?
(a) Equal magnitude; forces are in the same direction.
(b) The positron experiences a larger force because it has greater mass; directions are opposite.
(c) Equal magnitude; forces are in opposite directions.
(d) The electron experiences a larger force because it has smaller mass; directions are opposite.