All Questions
Tagged with reactance resistance
17 questions
2
votes
2
answers
591
views
Resistance Vs Reactance Definition
I am trying to understand the practical distinction between resistance and reactance. As I understand from all what I read the resistance is responsible for the current flow and the reactance is ...
- 373
1
vote
1
answer
80
views
When the depth of a conductor is sufficiently large, is the reactance equal to the resistance? [closed]
Is the reactance in a conductor approximately equal to the resistance in a conductor when the depth is very large?
If so, why?
I'm struggling to understand the concepts behind this. I believe it has ...
- 57
0
votes
2
answers
165
views
Line resistance >> line reactance or the other way around?
Grainger and Steven write in Power Systems Analysis that "in a well-designed and properly operated power transmission system... the line susceptances Bij are many times larger than the line ...
3
votes
3
answers
373
views
Should I include the resistance of capacitors and inductors (reactance) in my schematic?
I generated a DC/DC PS circuit from Maxim Integrated, and got this output:
You'll notice that both the inductors and the capacitors have their respective resistances marked (in milliohms). Are these ...
- 223
1
vote
1
answer
127
views
Determining the impedance of an unknown component
If I have an antenna and I wish to measure its impedance. I have two impedance values, Z=125.52-j207.36Ohms and Z=8.14-j39.6Ohms, and I do not know which one is correct/ which one applies to this ...
- 421
11
votes
6
answers
2k
views
What is the difference between impedance and reactance?
I mean how are they physically different? What does it mean to have imaginary numbers in the reactance?
- 161
0
votes
0
answers
86
views
Why reactance is imaginary? [duplicate]
In AC circuit, cartesian impedance formula is Z = R + jX (Z = impedance, R = resistance, X = reactance). Why is reactance imaginary (for capacitors and inductors)? I cannot find a good explanation ...
- 67
0
votes
2
answers
65
views
Why can't i calculate the Inductive reactance in this way?
Question:
\$V_1=40sin(1000t)\$,what is the value of Inductive reactance?
Solution :
\$Z=\frac{V_1}{I}=\frac{40}{8}=5\$,so \$5=\sqrt{R^2+X^2_L}=\sqrt{4^2+X^2_L}\$,so \$X_L=3\$
But i want to ask ...
- 551
1
vote
4
answers
1k
views
Does reactance increase noise?
Impedance is made of resistance and reactance which is capacitance and inductance. I read that increasing resistance increases noise, but what if capacitance or inductance is increased, does the noise ...
- 651
0
votes
3
answers
738
views
For an ideal capacitor, when is the current leading and when is the voltage leading by 90 degrees?
Say I have a purely resistive load as a reference in parallel with an ideal capacitive load. I know that the current through the capacitor is said to be leading by 90 degrees. Specifically, though, ...
- 787
1
vote
2
answers
656
views
Gain factor in real Resistance and Reactance (AD5933)
I'm trying to develop a system for bioimpedance measurement with the IC AD5933.
The AD5933 is a high precision impedance converter system that combines a frequency generator with a 12-bit, 1 MSPS, ...
- 61
1
vote
4
answers
392
views
Is current calculation in copper wire for AC simple or not?
I'm trying to learn electronics by myself, and I'm starting with simple current calculations. Let's assume we have a straight wire of length L connecting a source and a sink. I know the voltage (V), ...
- 583
0
votes
1
answer
127
views
Induction Motor - Reactances and Leakages
In the induction motor equivalent circuit (either Thevenin or otherwise), the rotor, and stator leakages and reactances are necessary for any useful calculations.
How does one estimate leakages and ...
0
votes
2
answers
1k
views
Current through heating element lower than resistance suggests
The fuser lamp (the heating element) in my laser printer broke from one of the ends. I measured the resistance of the, almost full length, wire which was 6 ohms. I tried to fix it by connecting the ...
- 11
2
votes
1
answer
55
views
AC analysis: finding L and R
EDIT: there should be arg[I2] instead of arg[I3]
I've tried to replace V1, C1, R1 with Thevenin equivalent, but I've lost in my calculations. Is there any better approach?
- 35
4
votes
1
answer
718
views
Inductor value given in OHM/Amp
I've been trying to figure out the inductance in Henries from a schematic of a Rabbit Microprocessor development board, however, instead of finding an inductance value over the components in question, ...
- 2,800
3
votes
1
answer
4k
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At what frequency will the reactance of a 1μF capacitor equal to the resistance of a 2kΩ resistor?
Here is my work:
\$ R = 2000 \Omega\$
\$ X_L = 2 \pi f L = 2 \pi (1 \mu F) f = 6.28\mu F(f)\$
\$f = \dfrac{2000 \Omega}{6.28 \mu F} = 318.471MHz \$
Does this look right to everyone?
user22490