All Bookma I Review Part A Learning Goal: To understand why charged particles move in circles perpendicular to a magnetic field and why the frequency is an invariant. Part B A particle of charge q and mass m moves in a region of space where there is a uniform magnetic field B = Bok (i.e., a magnetic field of magnitude Bo in the +2 direction). (Figure 1) In this problem, neglect any forces on the This force will cause the path of the particle to curve. Therefore, at a later time, the direction of the force will particle other than the magnetic force. have a component along the direction of motion remain perpendicular to the direction of motion O have a component against the direction of motion first have a component along the direction of motion; then against it; then along it; etc. Submit Previous Answers Correct Part C The fact that the magnetic field generates a force perpendicular to the instantaneous velocity of the particle has implications for the work that the field does on the particle. As a consequence, if only the magnetic field acts on the particle, its kinetic energy will increase over time decrease over time remain constant O oscillate Submit Request Answer Part D Complete previous part(s) Next > Provide Feedback