Calculate the area of cross section of a wire if is length is 1.0m it's resistance is 2.3ohm and the resistivityof the material of the wire is 1.84×10–6ohm m
Answers
Answered by
1
Step-by-step explanation:
R=23Ω
l=1.0m
ρ=1.84×10
−6
Ωm
A=?
A=
R
ρl
∴A=
23
1.84×10
−6
×1
A=0.08×10
−6
m
2
=8.0×10
−8
m
2
Answered by
1
Resistance R of a wire is given as: \frac{Kl}{A} }
Where, A is the area of cross-section of the wire l = Length of the wire = 1 m R = 23 Ω ρ = Resistivity of the wire = 1.84 × 10−6 Ωm Therefore, the area of cross-section of the wire is 8 ×10−8 m2
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