Three particles of equal charge, X, Y, and Z, enter a uniform magnetic field B. 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.

The ranking of orbital radii from smallest to largest is Z, Y, X.

Explanation:

Magnetic force is always perpendicular to the velocity by Fleming's right hand rule.a charged particle will be bent into a circular path by the component of magnetic field which is perpendicular to the velocity.

Particle X will be helical as it is parallel to the force and thus, uncharged by it and farthest away in orbit. Y is perpendicular to the force, whilst Z is perpendicular to X and the force.

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