Answered: why do we use variable resistor in…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Concept explainers

Question

why do we use variable resistor in temperature detecting alarm?

Expert Solution

Step 1

A thermistor is a device that operates on the principle of change of resistance.
It is made up of ceramic materials and has a high negative temprature coefficient from which we can say that as the temprature goes on increasing the resistance of a thermistor decreases and if the temprature is decreasing the resistance of the thermistor increases.
It is widely used in all domestic appliances such as refrigerators, geysers, etc.

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions