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Single circular loop of wire filled with a uniform magnetic

  1. Oct 27, 2010 #1
    1. The problem statement, all variables and given/known data
    The figure to the right shows a single circular loop of wire
    filled with a uniform magnetic field pointing into the page
    The radius of the loop is R = 1.75 cm. The magnitude
    of the magnetic field in the loop is changing
    according to B(t) = B0 exp{-t / 2.15sec}
    (a) what is the value of B0 if at t = 0.25 sec
    the magnitude of the induced emf in
    the loop is 1.00 V?
    (b) what is the magnitude of the induced electric field inside
    the loop at a distance


    2. Relevant equations
    Φ=BA
    E=dΦB/dt


    3. The attempt at a solution

    Φ=BA = (B0^-t/2.15)π1.75^2

    E=dΦB/dt =-AdB/dt=-(π1.75^2)((d(B0^(-0.25/2.15)))/dt
     
  2. jcsd
  3. Oct 27, 2010 #2
    am i using the right formula?
    I wanted to know if im on the right track for a)
     
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