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Magnetic Fields & the Lorentz Force

Try this: Double the speed. Does the charge take longer to go round?

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About this simulation

Send a charge through a magnetic field and watch a force that turns it without ever speeding it up.

Taught in Magnetic Fields & Forces

  • magnetic field
  • Lorentz force
  • cyclotron motion
  • velocity selector

How this runs

The equations of motion are integrated in your browser at a fixed timestep, so the numbers do not depend on your screen’s refresh rate. Nothing is sent to a server. Use Share setup to copy a link that reproduces exactly what you are looking at.