# Formula Lorentz Force on a Charge in a Magnetic Field Magnetic force    Magnetic field    Velocity    Electric charge    Angle ## Magnetic force

Unit
Magnetic force acts on a charge $$q$$ when it moves with velocity $$\class{blue}{v}$$ through magnetic field $$\class{violet}{B}$$.

## Magnetic field

Unit
Magnetic flux density indicates how strong the magnetic field is in which the charge moves. The greater the magnetic flux density, the greater the magnetic force.

## Velocity

Unit
Velocity of the charged particle in the magnetic field. The greater the velocity of the charged particle, the greater the magnetic force.

## Electric charge

Unit
Electric charge can be repulsive or attractive (e.g. a proton, electron). The greater the electric charge, the greater the magnetic force.

## Angle

Unit
Angle between the velocity direction of the particle and the magnetic field direction. If velocity and magnetic field are perpendicular to each other, the angle is 90 degrees. The sine of 90 degrees is 1.