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

Component method, #question-the measurement of 30.43 degrees north of east....

#question-the measurement of 30.43 degrees north of east..

Explain potentiometer, For the circuit shown in Figure, calculate the curre...

For the circuit shown in Figure, calculate the current ?owing in the 25Ω load and the voltage drop across the load when (a) AS is half of AB, (b) point S coincides with poi

Determine concept of pressure, A woman wearing high heels briefly supports ...

A woman wearing high heels briefly supports all her weight on the heels. If her mass is 45 kg and each heel has an area of 1.2 cm 2 , what pressure does she exert on the floor

Bead sliding on wire, Bead Sliding on Wire A vertical hoop supports a w...

Bead Sliding on Wire A vertical hoop supports a wire which is attached from the top of the hoop to any other point. Illustrate that the time required for a frictionless bead to

Explain generation of electrical energy, Explain Generation of electrical e...

Explain Generation of electrical energy Generation of electrical energy : The conversion of energy available in dissimilar forms  in nature into electrical energy is called as

Velocity distribution in a rectangular channel, An approximate equation for...

An approximate equation for the velocity distribution in a rectangular channel with turbulent flow is where umax is the velocity at the surface, y is the distance from the

Determine displacement current density, In free space electric field intens...

In free space electric field intensity is provided as E= y 20 cos (ωt-50x) volt/m. Determine displacement current density.

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