Volume resistance and surface resistance, Physics

Assignment Help:

Volume resistance: The resistance provided to the current which flows through the material is called volume resistance. For a cube of unit dimensions this is called volume resistivity. This resistivity is  the flow of current resistance offered to the flow of current through the body of the material, and is expressed in the same way as the resistivity of a conducting material. In ohm-m. Thus the volume resistance of an insulating material may be expressed as

            R=ρvd/a

Where ρV IS called the volume resistivity, and is expressed in terms of ohm-m. "d" is length of  the current path through the material in meters, "a" is the cross section area on the current path in square-m.

Surface resistance: The resistance offered by to current I which flows over the surface of insulating material is called surface material. Surface resistivity depends upon the humidity. 


Related Discussions:- Volume resistance and surface resistance

Compare the emf and the potential difference, Q. Compare the emf and the po...

Q. Compare the emf and the potential difference . Comparison of emf and potential difference 1. The difference of potentials among the two terminals of a cell in an open cir

Ceramic capacitors, As the name indicates, the dielectric of this type of c...

As the name indicates, the dielectric of this type of capacitor is a ceramic. The basis of ceramic material is mainly barium titanate or a similar material, but other ceramic subst

Classical free electron theory, Classical free electron theory: The ...

Classical free electron theory: The free  electron theory of metals using classical laws was developed by Dude and Lorentz in the beginning of last century. That time the va

Describe process for realization of plane polarized light, Briefly explain ...

Briefly explain how elliptically and circularly polarized light is generated. Describe the process for realization of plane polarized light from elliptically polarized light.

Classifications of capacitors, The capacitors can be classified on the basi...

The capacitors can be classified on the basis of nature of value, type of dielectric material used and polarity. On the basis of nature of value: Fixed value capacitor

Temperature coefficient of resistance, Ask question #Minimum 100 words how ...

Ask question #Minimum 100 words how is temperature coefficient of resistance helpful to mankind?accepted#

Colour code of resistors, Colour code of resistors: The current method ...

Colour code of resistors: The current method of colour code marking of resistors is the Band System. Close to one end of the resistor are four coloured bands (there may

# ELECTRONICS, #WHAT IS THE PRINCIPLE OF REGULATOR?

#WHAT IS THE PRINCIPLE OF REGULATOR?

Explain electric potential, Electric Potential: Electric Potential veri...

Electric Potential: Electric Potential verifies the flow of charge. Its unit is volt, represented as "v".

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