RL Circuit

Discussion in 'Homework Help' started by need_help, Sep 7, 2009.

  1. need_help

    Thread Starter New Member

    Sep 7, 2009
    The circuit is in DC steady state before switch flips at t=0. I need to find vL(0-) , iL(0-) , iL(t) , vL(t) for t>0
  2. mik3

    Senior Member

    Feb 4, 2008
    To find vL(0-) and iL(0-) assume that the inductor is a short circuit.

    To find the rest replace the battery with a short circuit and find the equivalent parallel resistance of the inductor. Then use the exponential equations to find the current and voltage agianst time.