Total impedance of rl circuit

  1. Dec 30, 2010 #1
    1. The problem statement, all variables and given/known data
    find total impedance of a circuit with R1 and L in parallel with R2.

    circuit looks like this (but with R2 instead of C):

    2. Relevant equations
    formula for two components in parallel: [tex]Z_T = Z_1 Z_2/(Z1 + Z_2)[/tex]

    3. The attempt at a solution
    question is, can I first combine the two resistors in parallel, then add the inductor in series? Or must I do the inductor and R1 together, in parallel with R2? So, eith er R1||R2 + Z_L or (R1+Z_L)||R2 ?

    I'm assuming the last one?
  2. jcsd
  3. Dec 30, 2010 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Yes, the latter.
  4. Dec 31, 2010 #3
    The two series impedances are both, as a combined single impedance, in parallel with the last impedance. That is why vela and yourself are both correct.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Similar Discussions: Total impedance of rl circuit
  1. RL Circuit (Replies: 3)

  2. RL circuit (Replies: 7)