The Specific Resistance Of A Wire Depends on Its: A) Radius B) Length C) Cross-section D) Material
By BYJU'S Exam Prep
Updated on: September 13th, 2023
The specific resistance of a wise depends on its material. Specific resistance is offered per unit cross-sectional area and length when a known voltage is applied. The specific resistance of the wire depends upon the material and temperature used in the wire. The formula of the specific resistance is as follows:
ρ = RA/L
Where, ⍴ = specific resistance
R = resistance
A = cross-sectional area
L = length of the material
Table of content
Specific Resistance Of A Wire
An ohm meter (m) is the SI unit of specific resistance. When a known quantity of voltage is applied to a substance, specific resistance is supplied per unit length and unit cross-sectional area of the substance. Specific resistance is the inverse of specific conductance, which describes a material’s capacity to carry electricity. The symbol for the conductivity of the particular kind is. Additionally, it goes by the names:
- Airway resistance
- The specific resistance of electricity
- For a mechanism moving mass, specific friction resistance exists.
|
Material |
Specific resistance at 20 °C |
|
ohm-metre |
|
|
Silver |
1.59 x 10 |
|
Copper |
1.72 x 10-8 |
|
Gold |
2.24 x 10-8 |
|
Tungsten |
5.65 x 10-8 |
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