Gold is the most ductile of all metals. For example, one gramof gold can be drawn into a wire 2.40 km long. The density ofgold is 19.3 x 103 kg/m3, and its resistivity is 2.44 x 10-8 Ω ⋅ m.What is the resistance of such a wire at 20.0°C?

Q: A 14-gauge copper wire has a cross-section area of 2.081 mm². The resistivity of copper at 20…

A: The initial (20oC) resistance is, R1=ρLA=1.7×10-8 Ωm100 m2.081 mm210-6 m21 mm2=0.817 Ω

Q: A 1.3-m long copper wire (resistivity 1.68x108 Q-m) has a resistance of 7 Q. What is the diameter…

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Q: The wire in a water heater is an alloy composed of nickel, chromium, and copper and has a…

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Q: Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a…

A: Given data:   Resistance of aluminium wire (RAl) = 0.344 Ω The resistivity of copper(ρcu) = 1.72 x…

Q: The resistivity of a 1.0 m long wire is 1.72 x 10-8pm and its cross sectional area is 2.0 X 10-6m2.…

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Q: A copper wire has diameter 0.5 mm and resistivity of 1.6 × 10-8 Ω m. What will be the length of this…

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Q: A copper wire of length L = 4000 meters has a uniform cross sectional area of A = 1.00 x 10-5 m2.…

A: Given: The length of the wire is 4000 m. The area of the wire is 1x10-5 m2. The length of the wire…

Q: A metal wire has a resistance of 25.00 W at 25 °C. When the wire is heated to 85°C the resistance…

A: Basic Details The resistance of a substance is dependent on resistivity, the length of the…

Q: A common flashlight bulb is rated at 0.25 A and 2.6 V (the values of the current and voltage under…

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Q: How long is a tungsten wire if it has a diameter of 0.195 x 10-3 m and a resistance of 3.33 k2? The…

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Q: As part of a class project you are given 0.900 g of nichrome and asked to fabricate a wire with…

A: the resistivity of nichrome is 1.00  10-6 Ω · m density of nichrome is 8.31  103 kg/m3

Q: An aluminum rod with a square cross section is 2.3 m long and 6.5 mm on edge. (a) What is the…

A: Given resistivities of the Aluminum and Copper are, ρAl=2.75×10-8 Ω mρCu=1.69×10-8 Ω m The…

Q: If the 0.130 mm diameter tungsten filament in a light bulb is to have a resistance of 0.100 Ω at…

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Q: An extension cord has a resistivity of p = 7.5 x 10-8 Ω.m. The cord is made from copper wire with a…

A: Given: An extension cord has a resistivity of ρ= 7.5 x 10-8 Ω.m The cord is made from copper wire…

Q: Resistance

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Q: A coil of wire has a resistance of 36.2Ω at 26 °C and 61.7Ω at 67 °C. What is the temperature…

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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.