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Physical Sciences
Electromagnetism
1892
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Lorentz Force

F=q(E+v×B)\mathbf{F} = q(\mathbf{E} + \mathbf{v} \times \mathbf{B})

Force on a charged particle from electric and magnetic fields combined.

By Hendrik Lorentz

Physical Sciences
Lorentz Force
1892 · Hendrik Lorentz
Human Reviewed
84%

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Why it matters: Basis of particle accelerators, mass spectrometers, and aurora physics.

Discoverers: Hendrik Lorentz (1892)

What does it mean?

Force on a charged particle from electric and magnetic fields combined.

Why should I care?

Basis of particle accelerators, mass spectrometers, and aurora physics.

Equation Compass

North — Prerequisites

West — History

South — Derivations

Variables & Units

SymbolNameUnitMeaning
FFForceNElectromagnetic force
qqChargeCParticle charge
vvVelocitym/sParticle velocity

Worked Example

Electron in uniform B field moves in circles: r = mv/(qB).

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Lorentz Force

F=q(E+v×B)\mathbf{F} = q(\mathbf{E} + \mathbf{v} \times \mathbf{B})

Real-world impact

Space systems

Orbital mechanics enables global connectivity and exploration.

Photo: Unsplash — rocket launch

Force on a charged particle from electric and magnetic fields combined.

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