Magnetic field of force?

  1. Hey, I am sure how to answer this question,

    How far does the magnetic field of force extend?

    Thanks.
     
  2. jcsd
  3. HallsofIvy

    HallsofIvy 40,964
    Staff Emeritus
    Science Advisor

    Forever, and ever, and ever, and ever, .......

    (F decreases as 1/r2 and that is never 0 no matter how large r is.)
     
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