1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
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: Faradays law: magnetic coil question

  1. May 30, 2007 #1
    1. The problem statement, all variables and given/known data
    (The information is for several questions and i have posted one of them)

    Two coils magnetically coupled, Voltage of 240v, 50Hz applied to coil 1, current of 2A flows, second coil connected only to a high impedance rms voltmeter reading 100v

    find: The peak total flux linkage with coil 1

    2. Relevant equations
    e = d{lamdar}/dt

    3. The attempt at a solution

    ok re-arranging the equation to find {lamdar} which is the flux linkage in coil 1


    e = 240 (as given)
    t = 1/f (and as radial 2 x pi x f) so t = 1/(2 x pi x f)
    t = 2.18... x10-3

    so {lamdar}= 0.7639 Wb-turns

    but the answer given say should be 1.079Wb-turns

    please help will be very gratefull have been at this for hours now.
  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