PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Magnetism and Electromagnetism · Magnetism and Electromagnetism
Problem
An alpha particle (mass 6.64×10−27kg, charge +3.2×10−19C) is accelerated from rest through a potential difference of 2.0kV and then enters a region of uniform magnetic field 0.10T at an angle of 60∘ with the field direction.
(i) Calculate the speed acquired by the alpha particle before it enters the magnetic field.
(ii) Determine the radius of the circular component of its motion in the magnetic field.
(iii) Compute the pitch of the helical path.
(iv) How much time will the particle take to advance a distance of 5.0cm along the direction of the magnetic field?