A platinum wire with room-temperature resistance 56.0 Ω is used as a thermistor. If you want...
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?
Homework Answers
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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...
(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
You want to produce three 2.00-mm diameter cylindrical wires, each with a resistance of 4.00 Ω...
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...
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...
7. A copper wire has a resistance of 4.75 at room temperature. What is the wire’s resistance at 86.4 °C?
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 resistivi...
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...
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....
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...
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
Chapter 18, Problem 18.03 XIncorrect. A gold wire 4.0 mm in diameter is to offer a resistance of ...
Chapter 18, Problem 18.03 XIncorrect. A gold wire 4.0 mm in diameter is to offer a resistance of no more than 15 Ω. Using the data in Table 18.1, compute the maximum wire length Table 18.1 Room-Temperature Electrical Conductivities for Nine Common Metals and Alloys Metal Silver Copper Gold Aluminum Brass (70 Cu-30 Zn) Electrical Conductivity [(a-m ] 6.8 x 10 6.0 x 10 4.3 x 10 3.8 x 10 1.6 x 10 1.0 x 10 0.94 x 107 0.6...
Calibration and sensing Consider a thermistor temperature sensor (Fig. 1) with a pull-up resistor...
using matlab to find steps 1-10
Calibration and sensing Consider a thermistor temperature sensor (Fig. 1) with a pull-up resistor R1 connected to a 10-bit analog-to-digital (ADC) converter (a full scale No-210-1=1023 counts corresponding to the reference voltage Vref). The thermistor is used to measure temperature in the total input span from -10°C to 110°C. knots n(t VO R1 A/D GND Temperature Fig. 1 The output count of the thermistor measurements circuit can be modeled by a nonlinear function of...
(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
Chapter 18, Problem 18.03 XIncorrect. A gold wire 4.0 mm in diameter is to offer a resistance of no more than 15 Ω. Using the data in Table 18.1, compute the maximum wire length Table 18.1 Room-Temperature Electrical Conductivities for Nine Common Metals and Alloys Metal Silver Copper Gold Aluminum Brass (70 Cu-30 Zn) Electrical Conductivity [(a-m ] 6.8 x 10 6.0 x 10 4.3 x 10 3.8 x 10 1.6 x 10 1.0 x 10 0.94 x 107 0.6...
using matlab to find steps 1-10
Calibration and sensing Consider a thermistor temperature sensor (Fig. 1) with a pull-up resistor R1 connected to a 10-bit analog-to-digital (ADC) converter (a full scale No-210-1=1023 counts corresponding to the reference voltage Vref). The thermistor is used to measure temperature in the total input span from -10°C to 110°C. knots n(t VO R1 A/D GND Temperature Fig. 1 The output count of the thermistor measurements circuit can be modeled by a nonlinear function of...
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