# Which metals have the lowest resistivity?

Electrical or thermal condutivity, resistivity, density and melting point

TIBTECH | Electrical conductivity (10.E6 Siemens/m) | Electrical resistivity (10.E-8 Ohm.m) |
---|---|---|

Silver | 62,1 | 1,6 |

copper | 58,5 | 1,7 |

Gold | 44,2 | 2,3 |

Aluminium | 36,9 | 2,7 |

A.

### What is resistivity of a material?

The electrical

**resistivity of a material**is also known as its specific electrical**resistance**. It is a measure of how strongly a**material**opposes the flow of electric current. A definition of**resistivity**is the electrical**resistance**per unit length and per unit of cross-sectional area.#### What is the total equivalent resistance of the circuit?

More**resistance**means less current is flowing through the**circuit**.**Equivalent resistance**is a different way of indicating '**total**'**resistance**, which we calculate differently for series and parallel circuits. In a series**circuit**, the different components are connected in a single, continuous loop.#### What is resistivity Class 10?

The**resistivity**of a material is the resistance of a wire of that material of unit length and unit cross-sectional area. The unit for**resistivity**is the ohm-metre. The**resistivity**of a material depends on its nature and the temperature of the conductor, but not on its shape and size.#### What is the resistivity of copper wire?

Resistivity and Temperature Coefficient at 20 CMaterial 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}

B.

### What is the resistivity of aluminum?

**Aluminum**is lighter than copper.

**Aluminum**has a

**resistivity**varying from 2.65 to 2.82 × 10

^{−}

^{8}Ω · m. Combined with it's light weight and alloyed with some other metals to make it stronger,

**aluminum**is ideal for electrical cables.

#### What is the resistivity of silver?

"**Resistivities**at 20 °C.**Silver**- 1.59 × 10^{−}^{8}Ωm" 1.59 × 10^{−}^{8}Ωm.**Resistivity**is a characteristic of a material that determines the ability of the material to oppose a flow of electrons, or electricity.#### What is a ohm m?

An ohmmeter is an electrical instrument that measures electrical resistance, the opposition to an electric current. Megohmmeters (also a trademarked device Megger) measure large values of resistance. The unit of measurement for resistance is**ohms**(Ω).#### How is resistivity related to resistance?

The**resistance**of an object (i.e., a**resistor**) depends on its shape and the material of which it is composed.**Resistivity**ρ is an intrinsic property of a material and directly proportional to the total**resistance**R, an extrinsic quantity that depends on the length and cross-sectional area of a**resistor**.

C.

### What is the resistance of gold?

As the graph shows, the resistivity of a substance is very much dependent on temperature. For most conductors, resistivity increases with rising temperature. At 20 °C, the resistivity of gold is

**approximately 2.44 × 10**^{−}**-m and steadily rises with increasing temperature.**^{8}ohm#### What is the resistivity of Aluminium?

**Aluminum**is lighter than copper.**Aluminum**has a**resistivity**varying from 2.65 to 2.82 × 10^{−}^{8}Ω · m. Combined with it's light weight and alloyed with some other metals to make it stronger,**aluminum**is ideal for electrical cables.#### What is the resistivity of a Nichrome wire?

The unit of resistivity is then ohm-meters (Ωm). Nichrome, a non-magnetic alloy that is commonly made up of 80% nickel and 20% chromium, has a resistivity ranging from**1.10 × 10**^{−}^{6}Ωm to**1.50 × 10**^{−}^{6}Ωm (**0.00000110**Ωm to**0.00000150**Ωm) and a very high boiling point (~1400 °C).#### What is the resistivity of copper?

We have also learnt that the**resistivity**(symbol: ρ) of the conductor (or material) relates to the physical property from which it is made and varies from material to material. For example, the**resistivity of copper**is generally given as: 1.72 x 10^{-}^{8}Ω.m.

Updated: 16th October 2019