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Homework Help: Relation between induction voltage, condenser and resistance

  1. Jun 25, 2011 #1
    1. The problem statement, all variables and given/known data
    Check out the attached image.
    The electromagnetic field B is constant.
    The rod is moving through the rail and an inductive emf V is produced on the closed loop.
    Due to that, the condenser C has a voltage difference Vc.
    Express the relation between the total emf produced V and the condenser's voltage difference Vc in function of C and the resistance r (check out the attached image).

    2. Relevant equations

    3. The attempt at a solution
    Well, no idea at all.
    I tried this:
    The total emf produced V = Vc + voltage of the resistance Vr
    As the condenser and the resistor are connected by conductors, they must have the same voltage, so Vc = Vr
    Then, I will get V= 2Vc.
    BUT, the question asks me to express the relation between V and Vc in function of C and r. What I got is a simple V=2Vc.

    Please help.

    Attached Files:

  2. jcsd
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