Three Particles of Equal Charge, X, Y, and Z, Enter

Multiple Choice

Three particles of equal charge, X, Y, and Z, enter a uniform magnetic field . X has velocity of magnitude v parallel to the field. Y has velocity of magnitude v perpendicular to the field. Z has equal velocity components v parallel and perpendicular to the field. Rank the radii of their orbits from least to greatest.

A) Rx = Ry < Rz.
B) Rx < Ry < Rz.
C) Rx = Ry = Rz.
D) Rx > Ry > Rz.
E) Rx < Ry = .