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

What are the applications of nmr spectroscopy, Q. What are the applications...

Q. What are the applications of nmr spectroscopy? Answer:- The major applications of NMR stereoscopy are the elucidation of the carbon-hydrogen backbone of organic compoun

Damping coefficient, what is the physical significance of damping coefficie...

what is the physical significance of damping coefficient?

What is the meaning of refraction, What is the meaning of Refraction? W...

What is the meaning of Refraction? Waves that do not reflect back from a boundary but travel into the new medium instead are said to refract. In one dimension, the wave just mo

What do you understand by sky wave propagation, What are the basic block st...

What are the basic block structure of communication system? What do you understand by sky wave propagation?

What is the direction of the current in the loop, Question: A long stra...

Question: A long straight portion of wire carries an increasing current due northward. Due east of as well as very near the straight wire at the same height as that of the stra

A see-saw lever, A see-saw lever Get a thick plank about 3 m long and b...

A see-saw lever Get a thick plank about 3 m long and bring it into the class room. Balance it over a box or some other suitable device and let the pupils experiment with the se

Explain frame of reference, FRAME OF REFERENCE:  "A set of reference ax...

FRAME OF REFERENCE:  "A set of reference axis needed to locate the position of an object in space is known as a frame of reference"

Rutherford’s atomic model failure, Rutherford’s atomic model failure ...

Rutherford’s atomic model failure Rutherford proposed that the electrons circulate around the nucleus. However according to electromagnetic theory, such circulating elect

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