| |
| metal |
resistivity(nano ohm) |
ratio |
| silver |
14.71 |
1,00000 |
| copper |
15.80 |
1,07401 |
| gold |
20.11 |
1,36710 |
| aluminum |
25.00 |
1,69952 |
| zinc |
54.55 |
3,70836 |
| iron |
87.10 |
5,92114 |
| lead |
193.00 |
13,1203 |
So, silver is the best conductor, at
least at room temperature. (At very low temperatures,
lead becomes a superconductor where its resistivity
becomes 0.00!) Copper is close to silver, and is much
less expensive. Aluminum is not far behind, and is less
expensive than copper.
One important note: Pure silver is a little better than
copper but industrial procedures involved in production
of wire are far better for copper than for silver, so
industrial copper wire is usually of higher purity than
silver one.
|
