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Speed of Proton

  1. Dec 18, 2007 #1
    1. The problem statement, all variables and given/known data

    A magnetic field of 0.1T forces a proton beam of 1.5mA to move in a circle of radius 0.1m. The plane of the circle is perpendicular to the magnetic field. What is the speed of the proton in the beam as it moves in the circle.

    2. Relevant equations



    3. The attempt at a solution
    Not sure where to start
     
  2. jcsd
  3. Dec 18, 2007 #2

    Doc Al

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    Staff: Mentor

    How do you find the magnetic force on a moving charge? If something moves in a circle, what's it's acceleration?
     
  4. Dec 18, 2007 #3
    A= v2/r
    I think
     
  5. Dec 18, 2007 #4

    Doc Al

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    Staff: Mentor

    Good. Find an expression for the magnetic force and apply Newton's 2nd law.
     
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