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!
The temperature co-efficient of resistance:
The temperature co-efficient of resistance is defined as;
The Fractional change in resistance from 0ºC, per degree temperature change.
and may be represented graphically as shown below.
The graph is reasonably linear for many materials over a moderate temperature range (0º - 200ºC).
The units are ºC because the ohms cancel out in the calculation.
Materials whose resistance increases with increasing temperature have a positive temperature co-efficient of resistance.
Materials whose resistance decreases with increasing temperature have a negative temperature co-efficient of resistance.
Some materials have very small temperature co-efficients of resistance and are used where it is important that the resistance does not change with temperature. Examples are Manganin and Eureka.
Using Gauss divergence theorem show that the volume of a sphere of radius 'r' is 4⁄3 πr 3 .
Enrique Iglesias belts out a high-C (1024 Hz) from the deck of his yacht. What is the wavelength of this sound wave in the surrounding air? As the sound wave enters the ocean below
Wires A as well as wire B are both made out of copper. Both of wires have the same length. The diameter of wire B is doubles that of wire A. Answer: Resistivity is a charac
Motion Animation A car along with a non-zero initial speed has a constant acceleration whose value could be controlled through the user.
Calculate how much heat energy is required to raise the temperature of a cube of copper of side 2cm. from 300 to 320k. given: density=8933kg/m cube , atomic weight=63.55, cp=24j/k/
The number of independent directions in which a system (or gas molecule) can have motion, are called as the number of degrees of freedom of that molecule or object. The number of d
derivations on above topic?
O rdinary glass is a good insulator but is too brittle to be used for anything but scientific instrument part s, accumulator container and for certain other special purposes. It is
Determine where r is the position vector.
what is the substance produced in the liver that acts in the small intestine during digestion?
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