Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
Ρt = Ρω [1+ α0 (t− 20)]Ρt → resistivity at temperatureΡ20 → resistivity at 200c.α0 → Coefficient of temperatureWhich is positive.
From the point of view of "green chemistry" - why should reactions be carried out in CO 2 instead of using carbon monoxide or phosgene (2 reasons)? Apart from the compression of c
How many fluorescence photons will really be detected on average by the photo detector during a 10 ms acquisition window if one diIC12 molecule is located in the illuminated area?
Consider the reaction A → P. The change in concentration of A with time is shown in the given plot: (i) Predict the order of the reaction. (ii) Derive the mathematical expr
what are moles?
A liquid stream containing half n-hexane and half n-pentane at 80°C and 5 atm is fed at a rate of 100 mol/hr to a flash evaporator operating at pressure (P) and 65°C. The decrease
what is definaion of leveling effect
Q. What is Atomic emission spectra? Atomic emission spectra while atoms of an element in the gaseous phase are excited by an input of energy such as that from a high-voltage
Factor of affecting conductions
Difference between methanol and ethanol Methanol Ethanol (a) When CH 3 OH is heated on Cu coil it gives formalin like smell.
hydrogen behave as a metal at low pressure only why
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd