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The resistance of a 100-cm wire of cross sectional area 2 × 10-6 m2 is 400 ω. what is the resistivity of the material of this wire?

Sagot :

The resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]

Given:

length,l=100vm or 1m

Area,A

Resistance,R

To find:

resistivity,ρ

ρ = RA/l

[tex] = \frac{400 \times 2 \times 10 {}^{ - 6} }{1} [/tex]

[tex] = 800 \times 10 {}^{ - 4} Ωm[/tex]

Thus,the resistivity comes out to be

Thus,the resistivity comes out to be [tex]=800×10 { }^{ - 4} Ωm[/tex]

Learn more about resistivity from here: https://brainly.com/question/28165872

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