Lesson: Effect of Temperature on Resistivity
In this lesson, we will learn how to calculate the change in the resistivity of a material given its temperature coefficient of resistance.
Sample Question Videos
Worksheet: 11 Questions • 7 Videos
A heater is being designed that uses a coil of 14-gauge (1.63 mm diameter) nichrome wire to dissipate 300 W using a voltage of V. How long should the engineer make the wire if the resistivity of nichrome is 1.5 µΩ⋅m?
The air temperature in a town varied between and on a certain summer day. Find the percentage change in the resistance of an exposed aluminum wire in the town during such a day. Use a value of for the temperature coefficient of resistance of aluminum.
Find the change in temperature required to decrease the resistance of a carbon resistor by . Use a value of for the temperature coefficient of resistance of carbon.