The Specific Resistance Of A Wire Depends on Its?

By Manesh Singh|Updated : August 29th, 2022

Specific resistance is the resistance offered per unit length and unit cross-sectional area when a known amount of voltage is applied. The specific resistance of the wire depends upon the material and temperature used in the wire. The mathematical representation of the specific resistance is as follows:

ρ = RA/L

Where, ⍴ = specific resistance

R = resistance

A = cross-sectional area

L = length of the material

Specific resistance is the reciprocal of specific conductance, defined as a measure of the ability of the material to conduct electricity. The specific conductance of the is represented as 𝛋. It also gets referred to as:

  • Specific airway resistance
  • Specific electric resistance
  • Specific resistance because of the friction for a mechanism transporting mass.

Summary:

The Specific Resistance Of A Wire Depends on Its?

The SI unit of specific resistance is an ohm meter (Ωm). Specific resistance is defined as the type of resistance offered per unit length and unit cross-sectional area of the substance with a known amount of voltage applied.

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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The Specific Resistance Of A Wire Depends on FAQs

  • The specific resistance of the wire depends upon the material and temperature used in the wire.

  • Specific resistance is the resistance offered per unit length and unit cross-sectional area when a known amount of voltage is applied.

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