How do temperature affect electrical resistivity of metals, Chemistry

Assignment Help:

How do impurities and temperature affect electrical resistivity of metals?

Ans:

Temperature effect on resistivity:

Any increase in temperature of a conductor increases thermal agitation of metallic ions as they vibrate about their mean positions. This reduces the mean free path and restricts the flow of  electrons,  hence reducing  the  conductivity  of  material  and  increasing  its resistivity.

1590_chemistry.png

Ρt = Ρω [1+ α0 (t− 20)]
Ρt → resistivity at temperature
Ρ20 → resistivity at 200c.
α0 → Coefficient of temperature
Which is positive.

 


Related Discussions:- How do temperature affect electrical resistivity of metals

Determine mass to charge ratio of the electron, Q. Determine Mass to charge...

Q. Determine Mass to charge ratio of the electron? Ans. Eventually, Thomson was able to find the ratio of the electron's mass to its electrical charge (m/e). Regardless o

Periodic trends, what can you deduce about the relationship between ionizat...

what can you deduce about the relationship between ionization energy and reactivity of metals

TOLUENE, HOW TOLUENE CAN BE PREPARED

HOW TOLUENE CAN BE PREPARED

EBT, WHAT IS EBT

WHAT IS EBT

Classification of polymers - linear polymers, Classification of polymers - ...

Classification of polymers - Linear polymers These are polymers where monomeric units are linked together to form linear sequential chain. These linear sequential polymers are

Electrochemical cells, ELECTROCHEMICAL CELLS Galvanic and electrolytic...

ELECTROCHEMICAL CELLS Galvanic and electrolytic cells: The difference between potential of the two metals results in a potential difference (also called a electromotive fo

Electrochestry, migration of ions,relatuve speed of ions,,,,,,,,,,,,,,,,,,,...

migration of ions,relatuve speed of ions,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Chemical thermodynamic properties, The following cell is used for measuring...

The following cell is used for measuring the partial pressure of oxygen at 700 o C. (Pt) Cu 2 Cu 2 0 / 0.85 ZrO 2 - 0.l5 CaO / O 2 (Pt) Knowing that conduction through the

Polarography, Describe the following electrochemical methods in terms of th...

Describe the following electrochemical methods in terms of their working principles instrumentation and applications i. Potentiometry ii. polarography iii. Conductometry

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