A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in un-cm? www
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Q: O A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its…
A: From the question, it is given that: Conductivity σ=98%Temperature T=20°CWe know that the…
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Q: The resistance of a wire is 126.48 ohms at 1000C and 100 ohms at 300C. The temperature coefficient…
A: R=Rref[1+α(T-Tref)] --------- equation 1R=126.48 ohmRref=100 ohmT=100oCTref=30oC
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- 10) A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in uQ-cm?10) A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in un-cm? 11) The resistance of a copper at 30°C is 500. If the temperature coefficient of copper at 0°C is 0.00427. What is the resistance at 100°C?A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in u0-cm?
- 10) A certain batch of copper wire was found to have a conductivity of 98% at 20°C. What is its resistivity in un-cm? wwwA two wires, one of Copper and the other of Nickel, if the resistance of the first is (12.7 Q), and the second is (11.6 0) at room temperature, at what temperature are their resistances equal? Note that the temperature coefficient of resistivity of Copper is (0.0039 C-1), and for Nickel it is equal to (0.006 C1).Explain electrical conductivity with diagram
- The resistance of wire increases from 40 – ohm at 20 0C to 50 – ohm at 70 0C. Find the temperature coefficient of resistance at 0 0C.Determine the thermal coefficient of resistance of copper at 50°C, then use this value todetermine the resistance of copper wire at 170° if the resistance of this copper wire at 50°C is50ohms. The thermal coefficient of resistance of copper at O°C is 0.004264/C°What is the resistance of a copper specimen with an initial resistance of 250 ohms at 30 degrees Celsius? Present temperature is 48 degrees Celsius and RTC at 0 degree Celsius of 1/231.9 per degree Celsius?
- Calculate the electrical conductivity of pure platinum at -200oC. data: resistivity of Pt a Tamb = 9.85x10-6ohm.cm; resistivity coefficient per T of Pt (a = 0.0039 ohm / ohmoC)Problem 13. Some copper wire has a resistance of 200 2 at 20°C. A current is passed through the wire and the temperature rises to 90°C. Determine the resistance of the wire at 90°C, correct to the nearest ohm, assuming that the temperature coefficient of resistance is 0.004/°C at 0°C.Question 3 a. Some materials exhibit the property of superconductivity under certain conditions. State what is meant by superconductivity and explain the required conditions for the material to become superconducting. b. The diagram below shows the cross-section of a cable consisting of parallel filaments that can be made superconducting, embedded in a cylinder of copper. copper cylinder filament The cross-sectional area of the copper in the cable is 2.28 x 10-7 m². The resistance of the copper in a 1.0 m length of the cable is 0.075 N. Calculate the resistivity of the copper, stating an appropriate unit. State and explain the what happen to the resistance of the cable when the embedded filaments of wire are made superconductive? i.