In Reply to: RE: "relevant physics"? It is called resistance posted by danlaudionut on January 27, 2015 at 22:49:35:
">> 12 inches of 28 gage wire and it has 0.02 ohms resistance
But at what frequency?
The resistance is not independant of frequency.
DC resistance and AC resistance may not be equal.
If it is at 1KHz it may not be at 20Hz or 20KHz."
True. But the inductance of a 12 inch length of 28 gauge wire is about 0.4 micro Henries, so even at 20 KHz this would represent a reactance of only about 0.05 ohms. This would still be negligible, compared with the input impedance of the stage it was connecting to.
Chris
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Follow Ups
- RE: "relevant physics"? It is called resistance - cpotl 06:41:13 01/28/15 (3)
- RE: "relevant physics"? It is called resistance - danlaudionut 07:24:23 01/28/15 (2)
- That's true for violin strings! - gusser 08:22:17 01/28/15 (0)
- RE: "relevant physics"? It is called resistance - cpotl 07:59:45 01/28/15 (0)