Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Current element signal amplitude

  1. May 9, 2012 #1


    User Avatar

    1. The problem statement, all variables and given/known data

    A 50cm long vertical current element located on a conducting ground plane radiates a 10MHz signal. 5km away from the element on the ground plane the amplitude of the signal is 0.1millivolts per meter. When the frequency is switched from 10MHz to 5MHz with current amplitude kept constant, what should be the length of the current element if signal amplitude at the new frequency, at a point 2.9km above the original 5km point is 0.1mV/meter?

    2. Relevant equations

    No clue...does this have anything to do with Biot-Savar Law or Ampere's Circuital Law?

    3. The attempt at a solution
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted