A hydrogen atom that has lost its electron is moving east in a region where the magnetic field is directed from south to north. It will be deflected:
A) up
B) down
C) north
D) south
E) not at all

Question

Quizplus · Accepted Answer

When a positively charged particle (like a hydrogen atom that has lost its electron) moves in a magnetic field, its direction of deflection is determined by the right-hand rule. Pointing the fingers of the right hand in the direction of the particle's velocity (east), and curling them toward the direction of the magnetic field (south to north), the thumb points in the direction of the force acting on the particle, which is up.

A Hydrogen Atom That Has Lost Its Electron Is Moving