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: A light bulb is rated at 110 W, 220 V. What steady current flows through it for these values? O 0.5…

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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…

Q: 1. What current flows through a 0.50 mm diameter wire of Platinum that is 80.0 cm long, when 12 V is…

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Q: 1. What length of copper (p=1.78 x 10-8Qm) wire 1.2 mm in diameter is needed to make a 20-Q resistor…

A: Given that:-Resistivity of copper, ρ=1.78×10-8 Ω.mDiameter of Wire, D=1.2 mmRadius, r=D2=1.2 mm2=0.6…

Q: A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten…

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Q: In an experiment, the current through a wire is 0.200 A and the voltage across the wire is 0.800 V.…

A: First of all the unit of resistivity is ohm-meter so except a , i,j other can be invalidated…

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: A heater dissipates 1000 W when the applied potential difference is 100 V and the wire temperature…

A: The temperature difference between the heater is, ∆T=TL-TH=200°C-800°C=-600°C The power dissipated…

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: 4. Determine the thermal coefficient of resistance of copper at 30°C, then use this value to…

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Q: 4) A copper wire has a diameter of 1.60mm and carrier a current of 2.5A. Given the density of free…

A: diameter, d = 1.60 mm current, I = 2.5 A number of electrons density, n = 8.5 x 1028  Resistivity, ρ…

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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Q: A cylindrical silicon rod is 1.0 cm long and has a cross-sectional radius of 2.0 mm. What is the…

A: The length of the silicon rod is 1.0 cm. The cross-sectional radius of the rod is 2.0 mm. The…

Q: 1. If electricity costs 15 Bz per kilowatt-hour, how much does it cost to operate a 220 V water…

A: As per guidelines, question 1 is answered. For the remaining question to be answered, post that…

Q: Conduc-Thor-s. Thor has two square prism conductors that are made of the same ohmic material and…

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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.