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Homework Help: Magnetic Flux of loop holes

  1. Oct 20, 2009 #1
    1. The problem statement, all variables and given/known data

    A square loop with resistance 15 ohms is placed perpendicular to a time-varying magnetic field; the loop is 8.2 cm on a side. The magnetic field is changing with a rate of 3.4 x 10^-1 T/s.

    (a) calculate the rate at which the magnetic flux threading the loop changes.

    (b) calculate the current ciruclating in the loop

    2. Relevant equations

    ampere's law
    ohm's law

    3. The attempt at a solution

    Ok. I would like advice and correction if anyone can look over what I did. What i did to calculate the magnetic flux is I first found the area of the square which is 6.7x10^-3 Then I multiplied the area of the loop and the rate of the magnetic flux which =2.3x10^-4 T(m^2).

    This is how far I have gotten. I am stuck in calculating the current. How am I suppose to use the 15 ohms? Thanks in advance.
  2. jcsd
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