A platinum wire with room-temperature resistance 56.0 Ω is used as a thermistor.
If you want to measure the temperature to within 0.4 ∘C in a range around room temperature, how precisely should the wire's resistance be measured?


A platinum wire with room-temperature resistance 56.0 Ω is used as a thermistor. If you want...
(20) A platinum temperature sensor operates over a broad temperature. Its resistance is related to the temperature by R Ro Gt+ C2t2, where t is temperature in C and R is in Ω. Suppose one platinum temperature sensor has a resistance of 100 Ω at a reference temperature 0 °C; its resistance is measured as 139.4 Ω at a temperature 1. at a temperature of 200 °C. (a) Find the values of coefficients Ro. C and C2
A metal wire has a resistance of 14.00 Ω at a temperature of 25.0°C. If the same wire has a resistance of 14.55 Ω at 90.0°C, what is the resistance when its temperature is −32.0°C?
You want to produce three 2.00-mm diameter cylindrical wires, each with a resistance of 4.00 Ω at room temperature. One wire is gold, one is copper, and one is aluminum. What will be the length of the gold wire? What will be the length of the copper wire? What will be the length of the aluminum wire? Gold has a density of 1.93 ×× 1044 kg/m3kg/m3. What will be the mass of the gold wire? If gold is currently worth...
Learning Goal: Examine the dependence of resistivity and resistance of a wire on temperature and how it affects the potential difference across the terminals of the wire. Introduction: A current of 65 milli-amperes (mA) flows through a wire of length L= 1.7 meters long and diameter of d= 1.15 millimeters at a temperature of T0= 20 °C; the wire's resistivity at this temperature is ρ0= 5.33×10−8 Ω ∙ m. The temperature coefficient of resistivity of the material is α= 4.6×10−3/C°....
7. A copper wire has a resistance of 4.75 at room temperature. What is the wire’s resistance at 86.4 °C?
You want to produce three 1.00-mm-diameter cylindrical wires, each with a resistance of 5.00 Ω at room temperature. One wire is gold, one is copper, and one is aluminum. Part A: What will be the length of the gold wire? Express your answer with appropriate units. Part B: What will be the length of the copper wire? Express your answer with appropriate units. Part C: What will be the length of the aluminum wire? Express your answer with appropriate units....
A coil of wire has a resistance of 38.0 Ω at 25° C and 43.7 Ω at 54° C. What is the temperature coefficient of resistivity?
Now let’s see how temperature affects the resistance of copper wire. A length of 18 gauge copper wire with a diameter of 1.02 mm and a cross-sectional area of 8.20×10−7 m2 has a resistance of 1.02 Ω at a temperature of 20 ∘C. Find the resistance at 0 ∘C and at 100 ∘C. The temperature coefficient of resistivity of copper is 0.0039 (C∘)−1. On a hot summer day in Death Valley, the resistance is 1.15 Ω. What is the temperature?
You need to create a 0.109 mm diameter material wire with a resistance of 3.55 Ω. Given the resistivity of the material is 6.03 x10-8 Ω·m, how long (in meters) must the wire be?
1. What is the resistance at normal room temperature of 60 m of copper wire having a diameter of 0.64 mm? (r copper = 1.7241 X 10^-8 at 20 C) 2. A semi-circular copper conductor has an inner radius of 60 cm, an axial thickness of 4 cm and a radial thickness of 3 cm. Determine the resistance of this conductor between its two end contact faces at 70 C