2. 13] A resistor measures 21.5 k2 at 40°C, and 20.6 k2 at 20°'C. Compute the...
A resistor has a resistance of 7 at 41.9 20°C. In 32. What is the resistance at 142.8°C? The temperature coefficient of resistivity is 4.5x103°C 1
A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00 ∘C, the resistance of the carbon resistor is 217.7 Ω . What is the temperature on a spring day when the resistance is 215.4 Ω ? Take the temperature coefficient of resistivity for carbon to be α = −5.00×10−4 C−1 .?
A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4°C, the resistance of the carbon resistor is 217.3 Ω. What is the temperature on a spring day when the resistance is 215.7 Ω? (Take the temperature coefficient of resistivity for carbon to be α = -5.00 × 10-4 ºC-1) (Give your answer in decimal using "degreeC" (ºC) as unit)
stuck on these 2 questions 1. A resistor made of Nichrome wire is used in an application where its resistance cannot change more than 2.53% from its value at 20.0°C. What is the highest temperature at which this resistor can be reliably used? The temperature coefficient of resistivity for Nichrome is 0.4 ✕ 10−3 (°C)−1. 2. An electronic device designed to operate at any temperature in the range from −9.9°C to 78.7°C contains pure carbon resistors. What is the percent...
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.
Consider the following (a) Find the current through the resistor in the figure above. (Take R 8 2.) (b) If the resistor is made of carbon, what will its resistance be when its temperature is increased by 69.0 C°? (The temperature coefficient of resistivity for carbon is -5.0 x 10-4 (°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. Express your answer to two significant figures and include the appropriate units.