Register to reply

Total impedance of rl circuit

by eng_stud
Tags: circuit, impedance
Share this thread:
Dec30-10, 04:40 AM
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):

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?
Phys.Org News Partner Science news on
Scientists develop 'electronic nose' for rapid detection of C. diff infection
Why plants in the office make us more productive
Tesla Motors dealing as states play factory poker
Dec30-10, 05:23 AM
Sci Advisor
HW Helper
PF Gold
P: 11,773
Yes, the latter.
Dec31-10, 10:22 PM
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.

Register to reply

Related Discussions
Impedance of a parallel RC circuit? Electrical Engineering 10
RLC circuit - total impedance,phasor analysis (mainly checks) Introductory Physics Homework 4
RLC circuit - total impedance,phasor analysis etc Introductory Physics Homework 4
Filter circuit impedance? Engineering, Comp Sci, & Technology Homework 1
AC circuit, mystery impedance Engineering, Comp Sci, & Technology Homework 1