Magnetic Force Calculator — F = qvB sin θ

A charge moving through a magnetic field feels a sideways force — maximum when moving perpendicular to the field, zero when parallel. This steers everything from motors to auroras.

Magnetic Force Calculator — F = qvB sin θ

F=qvBsin⁡θF = qvB\sin\theta

How to interpret the result

The force is always perpendicular to the velocity — so magnetic fields change a particle's direction, never its speed. Cyclotrons exploit exactly this.

Assumptions

  • Uniform magnetic field
  • Non-relativistic speeds
  • Angle-solving returns the acute solution