Problem 27.8: Mass spectrometer

Please wait for the animation to completely load.

The animation shows a particle passing through a mass spectrometer (position is given in meters and time is given in seconds). There is a constant magnetic field throughout the region directed into the screen. There is a constant electric field in the first region only. Restart.

  1. Is the particle charged? How do you know? If it is charged, does it have a positive or negative charge?  Justify your answer.
  2. If the electric field produced by the charged plates in the first region is 80 N/C, what is the value of the magnetic field in that region?
  3. What is the charge-to-mass ratio (q/m) of the particle?

For an introduction to the mass spectrometer see Exploration 27.3.

Problem authored by Melissa Dancy.

Physlets were developed at Davidson College and converted from Java to JavaScript using the SwingJS system developed at St. Olaf College.

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