A resistor has a resistance of 7 at 41.9 20°C. In 32. What is the resistance...
An aluminum wire has a resistance of 3.00 2 at 31.0°C. Determine its resistance (in 2) at 431°C. The temperature coefficient of resistivity for aluminum wire is 3.90 x 10-3 (°C)-1. (Assume that the temperature coefficient of resistivity was measured using the reference temperature 20°C.)
At –25°C a 25 m metal wire with a diameter of 1.0 mm has a resistance of 0.55 W. If the temperature coefficient of resistivity of the metal is 0.0018/C°, what is its resistivity at 32°C?
A wire with a temperature coefficient of resistance (-0.0060/C) has a resistance of 5.64 at 20° and a second wire with a temperature coefficient of resistance (0.0064/C) has a resistance of 5.25 at 20°. At what temperature will the two wires have the same resistance? .
A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 152 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.
A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 124 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.
A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 128 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.
A 100-W lightbulb has a resistance of about 12 Ω when cold (20 ∘C) and 128 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivity α=0.0045(C)−1.
Digital thermometers often make use of thermistors, a type of resistor with resistance that varies with temperature more than standard resistors. Find the temperature coefficient of resistivity in (°C)−1) for a linear thermistor with resistances of 54.2 Ω at 0.00°C and 234 Ω at 522°C .
Digital thermometers often make use of thermistors, a type of resistor with resistance that varies with temperature more than standard resistors. Find the temperature coefficient of resistivity (in (°C)−1) for a linear thermistor with resistances of 54.2 Ω at 0.00°C and 264 Ω at 528°C.
2. 13] A resistor measures 21.5 k2 at 40°C, and 20.6 k2 at 20°'C. Compute the temperature coefficient of resistivity, α for this resistor