5.0 cm length of a cylindrical copper wire has a radius of 0.01 mm. The resistivity of copper is 1.68 × 10−8[Ωm].  (a) What is the length of the wire in m?  (b) What is the cross-sectional area of the wire in m2?  (c) What is the resistance of the wire?  (d) If a voltage of 2.8 × 10−9 V is set up across the ends of the wire, what is the current flowing through the wire?  (e) How much charge will drift through a cross-section of this wire in 0.001s?

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Q: The resistivity of aluminum is 2.82 ✕ 10−8 Ω · m.   (a) Find the resistance of an aluminum wire (in…

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A: resistivity of copper ,  ρ= 1.68×10-8 ohm-m

Q: In a 100-m-long conductor of cylindrical cross-section (radius ro = is J = î2 A/m². The conductivity…

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.