EmSAT Achieve Exam > EmSAT Achieve Videos > Physics for EmSAT Achieve > Resisitivity & its Temperature Dependence
Resisitivity & its Temperature Dependence Video Lecture | Physics for EmSAT Achieve
|
208 videos|230 docs|191 tests
|
FAQs on Resisitivity & its Temperature Dependence Video Lecture - Physics for EmSAT Achieve
| 1. What is resistivity and how does it relate to temperature? |  |
Ans. Resistivity is a measure of a material's ability to resist the flow of electric current. It is denoted by the symbol ρ and is directly related to the temperature of the material. As temperature increases, the resistivity of most materials also increases. This means that the material becomes more resistant to the flow of electric current as it gets hotter.
| 2. What factors determine the resistivity of a material? | |
Ans. The resistivity of a material is determined by several factors, including the type of material, its atomic structure, and the temperature. Different materials have different resistivities due to variations in their atomic properties. For example, metals generally have lower resistivities compared to non-metals. Additionally, the presence of impurities or defects in the material can also affect its resistivity.
| 3. Why does resistivity increase with temperature? | |
Ans. The increase in resistivity with temperature can be explained by the scattering of electrons. As temperature rises, the atoms in the material vibrate more vigorously, causing increased collisions between the electrons and the vibrating atoms. These collisions disrupt the flow of electrons, leading to an increase in resistivity. This phenomenon is known as the temperature dependence of resistivity.
| 4. Are there any materials that show a decrease in resistivity with temperature? | |
Ans. Yes, there are some materials that exhibit a decrease in resistivity with increasing temperature. These materials are known as thermistors and are typically made from semiconductor materials. Unlike most materials, the resistivity of thermistors decreases as temperature rises. This property makes them useful in applications where temperature sensing or temperature compensation is required.
| 5. How is the temperature dependence of resistivity useful in practical applications? | |
Ans. The temperature dependence of resistivity is utilized in various practical applications. One common use is in the design and calibration of temperature sensors. By using materials with known resistivity-temperature relationships, accurate temperature measurements can be obtained. Additionally, this property is also exploited in devices like thermal fuses, which utilize changes in resistivity to protect against overheating.
Related Exams
About this Video
|
4.93/5 Rating |
|
Dec 31, 2024 Last updated |
Video Description: Resisitivity & its Temperature Dependence for EmSAT Achieve 2024 is part of Physics for EmSAT Achieve preparation.
The notes and questions for Resisitivity & its Temperature Dependence have been prepared according to the EmSAT Achieve exam syllabus.
Information about Resisitivity & its Temperature Dependence covers all important topics for EmSAT Achieve 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Resisitivity & its Temperature Dependence.
Introduction of Resisitivity & its Temperature Dependence in English is available as part of our Physics for EmSAT Achieve for EmSAT Achieve & Resisitivity & its Temperature Dependence in
Hindi for Physics for EmSAT Achieve course. Download more important topics related with notes, lectures and mock test series for
EmSAT Achieve Exam by signing up for free.
Description
Video Lecture & Questions for Resisitivity & its Temperature Dependence Video Lecture | Physics for EmSAT Achieve - EmSAT Achieve full syllabus preparation | Free video for EmSAT Achieve exam to prepare for Physics for EmSAT Achieve.
Information about Resisitivity & its Temperature Dependence
Here you can find the meaning of Resisitivity & its Temperature Dependence defined & explained in the simplest way possible.
Besides explaining types of Resisitivity & its Temperature Dependence theory, EduRev gives you an ample number of questions to practice Resisitivity & its Temperature Dependence tests,
examples and also practice EmSAT Achieve tests.
|
208 videos|230 docs|191 tests
|
|
Explore Courses for EmSAT Achieve exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Free
,video lectures
,practice quizzes
,Important questions
,Resisitivity & its Temperature Dependence Video Lecture | Physics for EmSAT Achieve
,study material
,ppt
,past year papers
,Semester Notes
,Objective type Questions
,MCQs
,Summary
,Extra Questions
,Exam
,Resisitivity & its Temperature Dependence Video Lecture | Physics for EmSAT Achieve
,Viva Questions
,Sample Paper
,mock tests for examination
,Previous Year Questions with Solutions
,shortcuts and tricks
,Resisitivity & its Temperature Dependence Video Lecture | Physics for EmSAT Achieve
;
Study Resisitivity & its Temperature Dependence on the App
Students of EmSAT Achieve can study Resisitivity & its Temperature Dependence alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Resisitivity & its Temperature Dependence,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Resisitivity & its Temperature Dependence is prepared as per the latest EmSAT Achieve syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup