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

Sketch the x-y intensity pattern, Consider the 4-f system below where an ob...

Consider the 4-f system below where an object is placed at the input plane and is illuminated by a plane wave   The object to the right is placed in the input plane where b

Vectors, How to add Vectors analytically

How to add Vectors analytically

Experiment of a small spool and a large spool, A small spool and a large sp...

A small spool and a large spool Using nails for axles fasten a large spool and a smaller spool to a block of wood. Slip a rubber band in excess of both spools. Turn the larger

Work and energy, if 2.13*106J of work must be done on a roller_coaster car ...

if 2.13*106J of work must be done on a roller_coaster car to move it 3.00*102m,how large is the net force acting on the car ?

Projectile, derive an expression for time of flight of horizontal projectil...

derive an expression for time of flight of horizontal projectile

Find weight of picture frame, a picture frame is hanging by two verticle st...

a picture frame is hanging by two verticle strings the tention in the string are 3.8N and 4.4N find the weight of the picture frame

Phase difference between incident and reflected waves, What do you mean by ...

What do you mean by the phase difference between incident and reflected waves at a) an open end and b) closed end? What happens to the fundamental frequency of a stretched strin

Compute the feedback ratio, Q. When the negative feedback is practical to a...

Q. When the negative feedback is practical to an amplifier of gain 50 the gain falls to 25.  Compute the feedback ratio? Af = A / 1 + Aβ 25 = 50 / 1 + 50 β 1 = 2 / 1 + 50

Volume observed by an observer stationed on the earth, A cube of side ‘a' i...

A cube of side ‘a' is moving with speed 0.6 c normal to one of its face. What is its volume observed by an observer stationed on the earth ? The volume of cube = a x a x a = a 3

Common dime-store cells, Common dime-store cells and batteries The ce...

Common dime-store cells and batteries The cells you see in the grocery, department, drug, and hardware stores which are popular for use in household convenience items such as

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