Difference between a magnetic field and an electric field

  1. 1. The problem statement, all variables and given/known data
    Describe the difference between a magnetic field and an electric one.

    2. Relevant equations

    3. The attempt at a solution
    I thought the two were the same or at least linked somehow. I don't understand why a proton will not achieve an increase of decrease in Ek when going through a magnetic field, but will under an electric field.
  2. jcsd
  3. tiny-tim

    tiny-tim 26,016
    Science Advisor
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