Which metal in the table has the highest resistivity?
Which metal in the table has the highest resistivity?
Resistivity and Temperature Coefficient at 20 C
| Material | Resistivity ρ (ohm m) | |
|---|---|---|
| Silver | 1.59 | x10-8 |
| Copper | 1.68 | x10-8 |
| Copper, annealed | 1.72 | x10-8 |
| Aluminum | 2.65 | x10-8 |
What is the most electrically resistant metal?
Table of Resistivity and Conductivity at 20°C
| Material | ρ (Ω•m) at 20 °C Resistivity | σ (S/m) at 20 °C Conductivity |
|---|---|---|
| Iron | 1.0×10−7 | 1.00×107 |
| Platinum | 1.06×10−7 | 9.43×106 |
| Tin | 1.09×10−7 | 9.17×106 |
| Carbon steel | (1010) | 1.43×10−7 |
Which type of metal has the lowest resistance?
Silver
Silver is the best conductor because it has the least resistance to the flow of electricity.
What is the resistance of metal?
The higher the electric potential difference, the more current you get. Conversely, if the electric resistance is high, the current will be low. In other words, a metal with a weak resistance is a better conductor. If you have an electric resistance, it means that the electrons are slowed in the metal.
Do metals have high resistance?
metals generally have a relatively low (though not zero) resistance. Within a metal conductor, even though there are free electrons, there is still resistance to current flow.
Which conductor has less resistivity?
The Resistivity of Various Materials A material with low resistivity means it has low resistance and thus the electrons flow smoothly through the material. For example, Copper and Aluminium have low resistivity. Good conductors have less resistivity. Insulators have a high resistivity.
Which metal is the poorest conductor of electricity?
Bismuth and tungsten are two metals which are poor conductors of electricity. Dear friend, Tungsten and Bismuth are metals which are poor conductors of electricity. Stainless Steel is a poor conductor because it has an alloy structure.
What material has the highest resistance to electricity?
silver
The material that has the highest electrical resistance is silver. After silver copper and gold are the materials that have the highest electrical resistance.
Which conductor in the table has the lowest resistance?
For materials with the same length, L, and area, A, the resistivity, ρ, makes the difference. A material with a lower resistivity is a better conductor. Copper is the best conductor because it has the lowest resistivity.
Why do metals have resistance?
As electrons move through a metal conductor, some collide with atoms, other electrons or impurities. Heating the metal conductor causes atoms to vibrate more, which in turn makes it more difficult for the electrons to flow, increasing resistance.
How does resistance occur in metal?
An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.