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Wire and a loop

  1. Mar 17, 2014 #1
    1. The problem statement, all variables and given/known data

    I really need help with part c of the question...

    Consider a long straight wire and a rectangle of wire as shown (see figure). Here the rectangle is a distance d = 4.9 cm from the straight wire at its nearest approach, with length L = 19.0 cm and width r = 7.0 cm (so the far edge is at distance d+r from the straight wire).

    https://capa.mcgill.ca/res/mcgill/dcmcgill/phy142/figs/0012.jpg

    a )If a current I1 = 50.0 Amps runs through the straight wire, what is the magnetic flux through the rectangle of wire? (You will need to do a simple integral.)
    1.69×10-6 Wb

    b) If the current I1 changes at a rate of dI1/dt = 1.100×103 Amps/second, what is the emf induced around the rectangle of wire?
    3.71×10-5 V

    c) When I1 = 50.0 Amps and I2 = 40.0 Amps, each in the direction indicated with the arrows, what is the net force on the rectangle of wire?

    2. Relevant equations

    ??

    3. The attempt at a solution

    F=(I1*L*mu*I2/(2pi))(1/d-1/(d+r))
     
  2. jcsd
  3. Mar 17, 2014 #2

    Andrew Mason

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    This link does not seem to work. It may need a login. Could you post the file in PF? Thanks.

    AM
     
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