what should be the resistance of constantan wire over a meter at room temperature if the thickness is 26? I've just done my physics coursework and my reading was 1.9876 ohms, but my teacher's told me to find out what it should be.
Many thanks
2006-12-14 08:37:21 · 5 answers · asked by lil wol 2 in Education & Reference ➔ Homework Help
Resistance of constantan, 26swg should be 2.92 ohms per metre according to Kay and Laby's Physical & Chemical constants. The method you used to measure it may account for the discrepancy.
2006-12-15 06:21:09 · answer #1 · answered by whisky5 2 · 0⤊ 0⤋
Resistivity Of Constantan Wire
2016-12-14 19:07:49 · answer #2 · answered by ? 4 · 0⤊ 0⤋
The resistance in a wire is proportional to the length of the wire. A 50 centimeter length of constantan wire has a resistance of 1.585 ohms what should the resistance of a meter be? That's right 1.585 X 2 = 3.170 ohms
2006-12-14 23:18:52 · answer #3 · answered by BARROWMAN 6 · 0⤊ 0⤋
as above
2006-12-15 04:47:30 · answer #4 · answered by dream theatre 7 · 0⤊ 0⤋
http://www.8886.co.uk/ref/resistivity_values.htm may help.
2006-12-14 08:44:01 · answer #5 · answered by migdalski 7 · 0⤊ 0⤋