# total impedance of rl circuit

by eng_stud
Tags: circuit, impedance
 P: 14 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): http://wpcontent.answcdn.com/wikiped...rallel.svg.png 2. Relevant equations formula for two components in parallel: $$Z_T = Z_1 Z_2/(Z1 + Z_2)$$ 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?
 Emeritus Sci Advisor HW Helper Thanks PF Gold P: 11,378 Yes, the latter.
 P: 6 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.

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