An electron is injected into a region of uniform magnetic
flux density with the components
of velocity parallel to and normal to the flux. What is the
path of the electron?
Answer / Tarun Goel
In this scenario, the electron's trajectory will be a helix due to the interaction between its velocity and the magnetic field. This phenomenon is called cyclotron motion or Larmor motion. The radius of the helix can be calculated using the Larmor formula: r = mv / (qB), where m is the electron mass, v is its velocity, q is the charge of the electron (-1 for an electron), and B is the magnetic flux density.
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