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

Electric field in coaxial cable

  1. Jan 6, 2016 #1
    Every physics books show that wave prograpation in coxial cable is TEM wave, like in the picture. But we know that J=σ E from ohms law, which says current in same direction with E field, which is not the case here. What do you think the reason is ?

    UzJYy.png
     
  2. jcsd
  3. Jan 6, 2016 #2

    Dale

    Staff: Mentor

    Last edited: Jan 6, 2016
  4. Jan 15, 2016 #3
    Hello Dale,

    Thank you for the reply. But I am talking about the ideal case where the cable has infinite conductivity and progpagation is pure TEM wave, which makes it sure that there is no "longitudinal" (i.e Ez=0) along the cable by definition. In this case, what force acts on the charges to flow down the cable ?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Electric field in coaxial cable
  1. Coaxial cable (Replies: 9)

  2. Electric field (Replies: 2)

Loading...