Explain resistivity, Electrical Engineering

Assignment Help:

Explain Resistivity.

Resistivity: Resistance R of a wire containing cross-sectional area A and length L maintain the relationship, - R α L and R α 1/A; that is resulting R α L/A or say R = ρ L / A; here ρ is the constant of proportionality and is termed as resistivity of a material and is termed as the resistance among the two opposite faces of a meter cube of that material. This unit of resistivity is ohm-m. Factors influencing resistivity are alloying, temperature and mechanical stressing and ageing.


Related Discussions:- Explain resistivity

Conductors for lines, Conductors for Lines The sizing of conductor mus...

Conductors for Lines The sizing of conductor must depend upon the load it is expected to serve and other factors, such as capacity required in future. Or else conductors/cable

Sparking with electrical equipment, Sparking : In ordinary domestic situat...

Sparking : In ordinary domestic situations, small electrical sparks are usually not hazardous. In certain conditions which are frequently encountered in science labs, even the sma

Matlab, what is the future scope of matlab in india?

what is the future scope of matlab in india?

What is an usart, What is an USART? USART stands for universal synchron...

What is an USART? USART stands for universal synchronous/Asynchronous Receiver/ Transmitter. It is a programmable communication interface that can communicate by using either s

What do you mean by circuit analysis techniques, What do you mean by Circui...

What do you mean by Circuit Analysis Techniques?   One simplifying technique often used in complex circuit problems is that of breaking the circuit into pieces of manageable

Grounding and shielding used in electronic instruments, Q.   How and why ar...

Q.   How and why are the grounding and shielding used in electronic instruments? Sol. In electronic instruments grounding and Shielding techniques are available in order to a

Evaluate the voltage gain, Q. On a CD amplifier R s = 4k?, µ =50 and r =35...

Q. On a CD amplifier R s = 4k?, µ =50 and r =35k?. Evaluate the voltage gain A v . A v = V o /V i = µRs / (µ+1)Rs + r

Explain working of resistance-capacitance coupled amplifiers, Q. Explain wo...

Q. Explain working of Resistance-capacitance coupled Amplifiers? Resistance-capacitance (RC)-coupled  Amplifiers : The following figure illustrates the most widely used method

Pareto Analysis, Pareto Analysis Pareto charts are based on the princi...

Pareto Analysis Pareto charts are based on the principle - "Vital Few Trivial Many". It allows user to focus attention on a few significant factors in a process. It is very us

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd