A new material is found to be superconducting below 77 K. How much resistance will a 75 mm long sample of this material have if it is at a temperature of 69.3 K while connected to a 6.4 V AC-power supply? R =       How much thermal energy will it generate? Thermal energy generated =

Q: When at 25 degrees Celsius, a certain resistor has a resistance of 220 Ohms. When connected to a…

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Q: A certain lightbulb has a tungsten filament with a resistance of 22.4 N when at 20.0°C and 143 N…

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Q: 1 0.500-meter length of wire with a cross-sectional area of 3.14 x 106 meters squared is found to…

A: Given value--- length = 0.5 m. Area = 3.14 × 10-6 m2 . Resistance = 2.53 × 10-3 ohm. We have to…

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Q: What is the resistance of a wire made of a material with a resistivity of 3.2 x 10 -8 if its length…

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Q: Q1: A conductive wire has a resistivity of (0.649×10-8(Q.m)') at room temperature are (5.8x10» )…

A: Given- Conductivity σ=0.649×10-8(Ω.m)-1So,Resistivity ρ=1σ=10.649×10-8=1.54×108Ω.m Conduction…

Q: Question 1 a) In Figure Q1(a), RT represents a resistance temperature device (RTD), whose…

A: Given equation for resistance at a temperature T is RT=R0(1+αT). R0=100 Ωα=0.0039 °C-1T=100 °C…

Q: Four AA batteries of -1.5 V in series are used to give power to a transistor radio. If the batteries…

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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.