The temperature coefficient of a certain conducting material is 4.78 × 10-3 (°C)-1. (a) At what temperature would the resistance be 3 times the resistance at 20.0°C? (Use 20.0°C as the reference point in  ρ-ρ0=ρ0α(T-T0).) (b) Does this temperature hold for all copper conductors, regardless of shape or size?

Q: (a) Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a…

A: Given: The length of the wire is 20 m. The diameter of the wire is 0.15 mm. The resistance of the…

Q: The resistance of a copper wire at 7⁰C is 50 mΩ. If the temperature coefficient of copper at 0⁰C is…

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Q: Two wires have the same cross-sectional area. One is tungsten, which has a temperature coefficient…

A: The coefficient of resistivity of tungsten αt=0.0045 °C-1. The coefficient of resistivity of carbon…

Q: A 100-W lightbulb has a resistance of about 12 ΩΩwhen cold (20 ∘C) and 148 Ω when on (hot).…

A: resistance when hot (R) = 148Ω resistance when cold (R0) = 12Ω Temperature of filament when cold…

Q: The resistance R of a copper wire at temperature T = 22°C is R = 13 2. Estimate the resistance at T…

A: Given data The initial resistance is, R1=13 Ω The initial temperature is T1=22oC The final…

Q: A composite conductor 10 [m] long consists of an inner core of steel with radius 1.5 [cm] and an…

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Q: (b) A voltage of 3 V is applied across the ends of a copper alloy conductor which has a resistance…

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Q: Given the temperature coefficient of resistivity of a certain wire to be 2 x10−3 (°C)−1.By what…

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Q: A certain light bulb has a tungsten filament with a resistance of 13.0 Ω when cold ( 20.0°C ) and…

A: Consider the given data as below. Resistance of the filament, Ro=13.0 Ω Reference temperature,…

Q: At room temperature (27.0 °C) the resistance of a heating element is 100 2. What is the temperature…

A: Given that - room temperature Resistance at room temperature Resistance at increased temperature…

Q: The temperature coefficient of a certain conducting material is 4.52 x 10-4 (°C)-1. (a) At what…

A: Thermal coefficient of temperature (alpha) = 4.52 x 10-4

Q: A wire is made from a material having a temperature coefficient of resistivity of 0.00125 (°C)". In…

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Q: The resistance R of a copper wire at temperature T = 25 °C is R = 112. Estimate the resistance at T…

A: The resistance R of a copper wire with a temperature T in C  is R(T).Then, given that R(25)=11 and…

Q: (a) A 35.5-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of…

A: Given Data The length of copper wire is:L=35.5 m The initial temperature is:To=20°C The heated…

Q: An engineering intern is studying the effect of temperature on the resistance of a current carrying…

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Q: A conducting wire of radius 1 mm is carrying a uniformly distributed current of 50 A. If the…

A: Given: Current, I = 50 Aelectron density, n = 8.1*1028 electrons/m3Radius of wire, r = 1 mm…

Q: Given the temperature coefficient of resistivity of a certain wire to be 3.1 x10−3 (°C)−1.By what…

A: Given temperature coefficient of resistivity , α=3.1 x10−3 (°C)−1 Let   T1 =20.0°C        T2 = 79.48…

Q: A (b) If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is…

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Q: A copper wire has a resistance of 0.400 Ω at 20.0°C, and an iron wire has a resistance of 0.426 Ω at…

A: To determine: The temperature at which the resistance of the copper and iron will be equal   Given:…

Q: (a) Of what material is a wire made, if it is 20.0 m long with a 0.150 mm diameter and has a…

A: Given data:  Length (L) = 20.0 m Diameter (d) = 0.150 mm = 0.150 × 10-3 m Initial Resistance (Ro) =…

Q: A 35.1-m length of copper wire at 20.0°C has a radius of 0.23 mm. If a potential difference of 7.0 V…

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Q: In order to double its resistance, by how much would you have to increase the temperature of a piece…

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Q: Calculate the ratio of the resistance of 14.0 m of aluminum wire 2.4 mm in diameter, to 21.0 m of…

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Q: (a) To what temperature must you raise a copper wire, originally at 20 °C, to double its resistance…

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Q: A certain material has a resistance of 250 2 at 20°C. The material is then heated to 1500°C,…

A: We have  initial Resistance Ro = 250 ohm  Final resistance =  R   initial temperature To = 20oC…

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.