12.2.B—Describe the force exerted on moving charged objects by a magnetic field

Describe the force exerted on moving charged objects by a magnetic field.

• A magnetic field will exert a force on a charged object moving within that field, with magnitude and direction that depend on the cross-product of the charge’s velocity and the magnetic field. Relevant equation: Fq vBB    ()=×
• In a region containing both a magnetic field and an electric field, a moving charged object will experience independent forces from each field.
• The Hall effect describes the potential difference created in a conductor by an external magnetic field that has a component perpendicular to the direction of charges moving in the conductor.