Q- A copper wire of length 3 m and area of cross section 1-7 x 10-6 nbsp-m2 has a resistance of nbsp-3 -160- -215- -160-10-2 ohm- Calculate the resistivity of copper-

Dear Student , Here in this case from the given data we can write that , Resistivity #160;= #961;=RAl=3 #215;10 2 #215;1.7 #215;10 63=1.7 #215;10 8 ...

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Standard X

Physics

Ohm's Law

Q. A copper w...

Question

Q. A copper wire of length 3 m and area of cross section 1.7 x 10^-6 m² has a resistance of $3 \times 10^{- 2}$ ohm. Calculate the resistivity of copper.

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Solution

Dear Student ,
Here in this case from the given data we can write that ,

$R e s i s t i v i t y = ρ = \frac{R A}{l} = \frac{3 \times 10^{- 2} \times 1.7 \times 10^{- 6}}{3} = 1.7 \times 10^{- 8} Ω - m$
Regards

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Q. A copper wire of length 3 m and area of cross section 1.7 x 10-6 m2 has a resistance of 3 × 10-2 ohm. Calculate the resistivity of copper.

Dear Student , Here in this case from the given data we can write that , Resistivity =ρ=RAl=3×10-2×1.7×10-63=1.7×10-8 Ω-m Regards

Q. A copper wire of length 3 m and area of cross section 1.7 x 10^-6 m² has a resistance of $3 \times 10^{- 2}$ ohm. Calculate the resistivity of copper.

Dear Student ,
Here in this case from the given data we can write that ,

$R e s i s t i v i t y = ρ = \frac{R A}{l} = \frac{3 \times 10^{- 2} \times 1.7 \times 10^{- 6}}{3} = 1.7 \times 10^{- 8} Ω - m$
Regards