Help calculating req in parallel circuit and voltage through node

Discussion in 'Homework Help' started by fishguts, Sep 13, 2007.

  1. fishguts

    Thread Starter Member

    Sep 3, 2007
    I am trying to calculate the rew of a paralle circuit but cannot get the right answer.

    The resistance of them each is 100ohms and 383.1944444 ohms or 27590/72.

    I tried the formula 1/R1+1/R2 but I am not getting the right answer. Can anyone point me in the right direction please? Also how do i calculate voltage at each node? I am not too familiar with that and I goggled around and did not find anything helpful. I am trying to find voltage through each node in this circuit . it is problem number 1d. Any help would be appreciated.
  2. Eduard Munteanu

    Active Member

    Sep 1, 2007
    The link you posted is broken.

    Are you sure you got the formula right? It's:
    {1 \over R_{eq}} = {1 \over R_1} + {1 \over R_2} + ...
    which yields R_{eq} = {{R_1 R_2} \over {R_1 + R_2}} for two resistors. Maybe you forgot about that the left side of the first equation is a fraction.