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Maximum current through resistor in a coil of wire with two resistors in parallel

  1. Apr 22, 2012 #1
    1. The problem statement, all variables and given/known data

    A coil of wire has 600 turns and is 5.5 cm in diameter is in a magnetic field that decreases from 2.2 T to 0 T in 6.2 ms. The axis of the coil is parallel to the field. The coil is hooked up to two resistors of 120 Ω and 200 Ω connected in parallel. What is the maximum current through the 200 Ω resistor?

    2. Relevant equations

    B=uoNI/l
    I=V/R
    R= (1/R1+1/R2)-1
    ?
    3. The attempt at a solution

    I know I need to find voltage and then find current of just the 200 ohm resistor
     
  2. jcsd
  3. Apr 23, 2012 #2

    gneill

    User Avatar

    Staff: Mentor

    Hint: Look up Faraday's Law of Induction
     
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