A heating clement made of tungsten wire is connected to a large battery that has negligible internal resistance. When the heating element reaches 80.0° C, it consumes electrical energy at a rate of 480 W. What is its power consumption when its temperature is 150.0°C? Assume that the temperature coefficient of resistivity has (lie value given in Table 25.2 and that it is constant over the temperature range in this problem. In Eq. (25.12) take T 0 to be 20.0°C.
A heating clement made of tungsten wire is connected to a large battery that has negligible internal resistance. When the heating element reaches 80.0° C, it consumes electrical energy at a rate of 480 W. What is its power consumption when its temperature is 150.0°C? Assume that the temperature coefficient of resistivity has (lie value given in Table 25.2 and that it is constant over the temperature range in this problem. In Eq. (25.12) take T 0 to be 20.0°C.
A heating clement made of tungsten wire is connected to a large battery that has negligible internal resistance. When the heating element reaches 80.0° C, it consumes electrical energy at a rate of 480 W. What is its power consumption when its temperature is 150.0°C? Assume that the temperature coefficient of resistivity has (lie value given in Table 25.2 and that it is constant over the temperature range in this problem. In Eq. (25.12) take T0 to be 20.0°C.
When at 25 degrees Celsius, a certain resistor has a resistance of 220 Ohms. When connected to a 11.0 Volt power supply, the current in the circuit is measured to be 48.9 mA. What is the temperature of the resistor if its temperature coefficient of resistivity is 4.00 x 10^-3 per degree Celsius?
A 1.30 m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0 V across its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0∘C) the ammeter reads 18.8 A, while at 92.0∘C it reads 16.6 A. You can ignore any thermal expansion of the rod.
(A) Find the resistivity for the material of the rod at 20∘C Express your answer with the appropriate units.
(B) Find the temperature coefficient of resistivity at 20∘C for the material of the rod. Express your answer in inverse degrees Celsius.
A toaster has a Nichrome (a=4.5×10-4 °C-l) heating element that has a resistance of Ro= 80 Q at a
temperature T=20 °C. When the toaster is turned on, the resistance of the element rises to 89.3 Q and its
temperature is increased. Find the final temperature (in °C) of the heating element.
Chapter 25 Solutions
University Physics with Modern Physics, Volume 1 (Chs. 1-20) and Mastering Physics with Pearson eText & ValuePack Access Card (14th Edition)
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
How To Solve Any Resistors In Series and Parallel Combination Circuit Problems in Physics; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=eFlJy0cPbsY;License: Standard YouTube License, CC-BY