At 20°C, the resistance of a sample of tungsten is 2.2 k Ω. What is the resistance of a sample when it is cooled to -10°C? Let a = 0.004403 at 20°C.
At 20°C, the resistance of a sample of tungsten is 2.2 k Ω. What is the...
At 20°C, the resistance of a sample of nickel is 525 Ω. What is the resistance when the sample is heated to 70°C? Let a = 0.005866 at 20°C.
A certain lightbulb has a tungsten filament with a resistance of 19.0 Ω when at 20.0°C and 140 Ω when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.
A given copper wire has a resistance of 5.05 Ω at 20.0°C while a tungsten wire of the same diameter has a resistance of 4.69 Ω at 20.0°C. At what temperature will the two wires have the same resistance? Your response differs from the correct answer by more than 10%. Double check your calculations.°C
For the inverter of Fig. 13.8(a), let the on-resistance of PU be 20 k Ω and that of PD-10 k12. If the capacitance C 10 iF, find (pLH piH. IpHL, and tp
What is the diameter of a 1.00-m length of tungsten wire whose resistance is 0.45 Ω ?
What is the diameter of a 1.00-m length of tungsten wire whose resistance is 0.10 Ω ?
What is the diameter of a 1.00-m length of tungsten wire whose resistance is 0.50 Ω ?
(1 point) 8. At 20°C, a length of copper wire has a resistance of 5.0 Ω What is its resistance when the wire is heated to 80°C? Let α-0.004 at 20°C 01.2Ω 07.5 Ω 06.2 Ω 010 Ω
The resistance of a certain copper wire is 0.4 Ω. Determine the resistance of a tungsten wire having the same dimensions as the copper wire. Express your answer to three significant figures and include the appropriate units.
The resistance of a certain copper power line is 100 Ω at 20°C. What is the resistance when the sun heats up the line to 38°C? The inferred absolute temperature “Ti” of copper is -234.5°C.