#### Question

Calculate the area of cross-section of a wire if its length is 1.0 m, its resistance is 23 Ω and the resistivity of the material of the wire is 1.84 × 10^{−6} Ω m.

#### Solution

Length of the wire,

*l*=1.0 mResistance of the wire = 23 Ω

Resistivity of the material of the wire = 1.84 × 10

We know that,

^{−6}Ωm.We know that,

`R=l/A`

Area of cross-section,

Area of cross-section,

`A=1.84xx10^-6`Ωm

*A*= 8 x 10

^{-8 }m

^{2}

Thus, the area the of cross-section of the wire,

*A*= 8 x 10^{-8 }m^{2} Is there an error in this question or solution?

Solution Calculate the Area of Cross-section of a Wire If Its Length is 1.0 M, Its Resistance is 23 ω and the Resistivity of the Material of the Wire is 1.84 × 10−6 ω M. Concept: Factors on Which the Resistance of a Conductor Depends.