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Homework Help: Ampere's Law

  1. Nov 18, 2013 #1
    What is the wavelength of a wave that has a frequency of 60MHz?
    Last edited: Nov 18, 2013
  2. jcsd
  3. Nov 18, 2013 #2
    Well amperes law is: ##\oint \vec{B}\cdot d\vec{s}=\mu_{o}I##. If you know its a wire, what does that tell you about the ds? And the dot product between the vectors B and ds is what? With that you can plug in 0.5B to find R...
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