A wire is 1.0 m long , 0.2mm in diameter and has a resistance of 10 ohms.
Calculate the resistivity of the material ?
Answers
Answered by
32
hope this helps you... actually this is similar 2 ur ques
pls give it a brainliest ans
pls give it a brainliest ans
Attachments:
Answered by
44
Length l = 1.0 m
Diameter d = 0.2 mm
So, radius r = 0.1 mm = 1.0×10^(-4) m
Resistance R = 10 Ω
Let resistivity be ρ
Now,
R = ρ l/A
So, ρ = (R×A)/l
= R×π×r² /l
= 10×(22/7)×[1.0×10^(-4)]² / 1.0
= 22×10^(-7) / 7
So, ρ = 3.14 × 10^(-7) Ωm
Diameter d = 0.2 mm
So, radius r = 0.1 mm = 1.0×10^(-4) m
Resistance R = 10 Ω
Let resistivity be ρ
Now,
R = ρ l/A
So, ρ = (R×A)/l
= R×π×r² /l
= 10×(22/7)×[1.0×10^(-4)]² / 1.0
= 22×10^(-7) / 7
So, ρ = 3.14 × 10^(-7) Ωm
QGP:
Please mark as brainliest if you like it
i cant mark it ..
@Puneet19, you cannot mark the answer as brainliest
Only the questioner , which is @Deepikakvvk06 can mark it as brainliest.
yes i know
Similar questions