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Major_Disaster · 2007-01-01 17:23:38

Hello,

First time poster, be gentle!

Im doing an AS Physics Planning Excercise to design an experiment to find the resistivity of paper (easy enough).

But, before finding my own values from the experiment for the resistivity of paper i need to know the "correct official" value.

I need this for 2 reasons.

1. So i can work the number back to figure out what PD i should use to get a measureable current in the experiment.

2. To check what i get is right!

Ok, any ideas?

So to recap i need a value (in the form y.yy X 10^-y Ohm metres) for the Resistivity of Paper.

Thanks

Chris · 2007-01-01 19:13:36

Well, I'm pretty sure that your answer will depend on the specific paper you are using. Standard white printer paper will not be very conductive at all and I'd be surprised if you can measure anything without a fairly expensive ammeter. However, there are specifically designed conductive papers.

Major_Disaster · 2007-01-01 19:19:04

Thanks for the reply!

Yes i was thinking about what type of paper as well.

To be honest this task hasnt been presented very well... and im assuming we are meant to state standard shop bought A4 paper (we will not actually be doing the experiment it is just a practise).

However, GSM would again be an issue...

But really any value for paper will do, its not the final draft!

Yes paper wont conduct very well at all, but we will be using Extra High Tension PSUs and Milliameters to push some current.

But i need to know the resistivity so i can say in my plan what range of PDs to use!

Very confusing!

But really most any half sensible value will do! As long as ive got a number of some kind to write down.

Chris · 2007-01-01 19:31:22

Hmmm. Apparently this is a well researched area. I never thought that the paper industry would have to be too worried about these things, but with toner-based printers I guess it is important.

See this:

http://imaging.org/store/epub.cfm?abstrid=904

Also, try searching Google Scholar. You may be able to find a paper with the info you need.

Major_Disaster · 2007-01-01 20:29:24

Thanks for the continued help.

Ive been looking and yeah there is a lot of talk about it, but i cant find one value anywhere!

Might be becuase there are soooo many variables (CSA, GSM, Conducting paper or not, toner paper etc.) but still i need one (ANY!) value.

This is a long shot but here goes...

My teacher said the value could be found in a book. He didnt give a name but described it as very VERY large, old brown / green and full of random values (such as resistivity of paper).

Any ideas what the book was called?! Worth a shot...!

Chris · 2007-01-02 19:56:07

That is definitely a description of the CRC Handbook. Either the Chemistry and Physics series, Materials Science series, or maybe the Applied Engineering Science series.

I briefly looked in the Chemistry and Physics series that I have, and I couldn't find it. That doesn't mean that it isn't there, though.

Any college or university library should have copies.

Jezyboy · 2007-04-16 19:23:09

I think this maybe a similar plan to the one i am trying. If so how do you get the current to flow through the insulator and not through the voltmeter

Chris · 2007-04-16 20:58:55

... and not through the voltmeter

You need to hook your voltmeter across whatever you are trying to determine the resistance of.

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#1 2007-01-01 17:23:38

The Resistivity of Paper?

#2 2007-01-01 19:13:36

Re: The Resistivity of Paper?

#3 2007-01-01 19:19:04

Re: The Resistivity of Paper?

#4 2007-01-01 19:31:22

Re: The Resistivity of Paper?

#5 2007-01-01 20:29:24

Re: The Resistivity of Paper?

#6 2007-01-02 19:56:07

Re: The Resistivity of Paper?

#7 2007-04-16 19:23:09

Re: The Resistivity of Paper?

#8 2007-04-16 20:58:55

Re: The Resistivity of Paper?

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