What is Equivalent resistance: Definition and 209 Discussions
Practical capacitors and inductors as used in electric circuits are not ideal components with only capacitance or inductance. However, they can be treated, to a very good degree of approximation, as being ideal capacitors and inductors in series with a resistance; this resistance is defined as the equivalent series resistance (ESR). If not otherwise specified, the ESR is always an AC resistance, which means it is measured at specified frequencies, 100 kHz for switched-mode power supply components, 120 Hz for linear power-supply components, and at its self-resonant frequency for general-application components. Additionally, audio components may report a "Q factor", incorporating ESR among other things, at 1000 Hz.
Homework Statement
Find R_{eq} and i_0 in the circuit below.
http://img215.imageshack.us/img215/3074/chapter2problem38aw0.jpg Homework Equations
v\,=\,i\,R
Parallel and series resistor equations.The Attempt at a Solution
After using the resistor equations to get down to R_{eq}, I get the...
Homework Statement
Using series/parallel resistance combination, find the equivalent resistance seen by the source in the circuit below. Find the overall dissipated power.
http://img300.imageshack.us/img300/6132/chapter2problem34au4.jpg
Homework Equations
For resistors in series...
I'm not sure if I'm doing this right, I would appreciate if someone could take a look.
Q. Find the equivalent resistance of the circuit (attached diagram). Each of the six resistors has a resistance equal to 12 ohms.
I'm thinking that R5 and R6 are in series and therefore combine to be 2R...
Find the equivalent resistance between points A and B for the group of resistors shown in Figure 21-29, where R1 = 93 and R2 = 40 .
http://server5.ihostphotos.com/show.php?id=fW6dc414515Bf2aS6b42f0eGf8aad2e7
ok i know that R_{1} and 35\Omega are in series and R_{2} is in parallel to the top...
Can two resistors in series be replaced by a single resistor and give an equivalent resistance to the circuit?
If so , how must the single resistance be related to the two in series ?
R=R1+R2 ? ?
I'm in a intro to circuits class for non-EE majors. One of the homework problems asks for the equivalent resistance.
See the attached file for a picture of this system.
I know the first step is to add resistors R4 and R5 (in series) as well as add resistors R6 and R7 (in series). But...
For this question I am pretty sure I am doing everything right but I just can't get the right answer. Diagram below. This is the question. Find the equivalent resistance of the circuit shown in the diagram, where R1 = 3 Ω, R2 = 2 Ω, R3 = 4 Ω, R4 = 1 Ω, R5 = 1 Ω, R6 = 2 Ω, and R7 = 2 Ω.
What I...
ok, so the problem states: the current in a loop circuit that has a resistance of R1 is 3A. The current is reduced to 1.6A when an additional resistor R2=2ohms is added in series with R1. What is the value of R1?
I drew two diagrams. My logic was that the voltage would be the same, b/c the...
I'm stumped by this problem.
There's no symmetry in the circuit, so I can't ignore the 1 ohm resistor that bisects the triangle. Is there something else I'm missing? I'm supposed to show the Rab = 27/17 ohms.
Please see the attached diagram.
Thanks.