Suppose the resistance of a copper wire is 1.05 Ω at 20°C. Find the resistance at 0°C and 100°C.
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Suppose the resistance of a copper wire is 1.05 Ω at 20°C. Find the
resistance at 0°C and 100°C.
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- A copper wire has a resistance of 0.400 2 at 20.0°C, and an iron wire has a resistance of 0.430 at the same temperature. At what temperature (in °C) are their resistances equal? This is all the information given.A platinum resistance thermometer has a resistance R0 = 50 Ω at atemperature To of 20 °C. The temperature coefficient of resistance for theconductor for Pt (α) is 3.92 x 10-3 (°C)-1. The thermometer is immersed in avessel containing molten tin, at which point the resistance increases to 92.8Ω. What is temperature of the liquid tin?If the 0.130 mm diameter tungsten filament in a light bulb is to have a resistance of 0.230 Ω at 20.0°C, how long should it be?
- A silver wire has a resistance of 2.00 Ω at 34.0°C. Determine its resistance (in Ω) at 434°C. The temperature coefficient of resistivity for silver wire is 3.80 ✕ 10−3 (°C)−1. (Assume that the temperature coefficient of resistivity was measured using the reference temperature 20°C.)Platinum is commonly used as a resistance thermometer since Platinum is relatively free from corrosive effects and has a high melting point. Suppose that at 20 oC the resistance of a Platinum wire is 164.2 Ω. When this wire is placed in a solution, the resistance of the wire becomes 187.4 Ω. What is the temperature of the solution? The temperature coefficient of resistivity of Platinum is α = 0.00393.A digital thermometer employs a thermistor as the temperature-sensing element. A thermistor is a kind of semiconductor and has a large negative temperature coefficient of resistivity α. Suppose α = -0.0503 (Co)-1 for the thermistor in a digital thermometer used to measure the temperature of a patient. The resistance of the thermistor decreases to 87.6% of its value at the normal body temperature of 37.0 oC. What is the patient's temperature?
- Suppose at 70°C the resistance of a platinum resistance thermometer is 170 Ω. When placed in aparticular solution, the resistance is 7+100 Ω. What is the temperature of this solution?Temperature Coefficient of resistivity for platinum is 3.93 x 10-3 1/ 0 C.(a)Calculate the equivalent resistance (in Ω) between points a and b. Ω (b)If a voltage of 41.0 V is applied between points a and b, find the current (in A) in each resistor. 12 Ω A 6.0 Ω A 5.0 Ω A 4.0 Ω A 8.0 Ω