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Fanman22

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Three very large sheets are separated by equal distances of 20.0 cm (Fig. 22-42). The first and third sheets are very thin and nonconducting and have surface charge densities of +6.50 µC/m2 and -6.50 µC/m2, respectively. The middle sheet is conducting but has no net charge.

http://img.photobucket.com/albums/v225/Fanman22/22-42alt.gif

What is the electric field between the left and middle sheets?

What is the electric field between the middle and right sheets?

Since it says the sheets are very large, and there is only a 0.2m separation between the surfaces, it seems logical that the E-field can be considered as calculating the field at a point close to the surface with the following equation:

E = charge density / (2*epsilon) = 6.5e-6/(2*(8.85e-12)) = 3.67e5 N/C

But apparently that is wrong even though I am reading it straight from my text??

http://img.photobucket.com/albums/v225/Fanman22/22-42alt.gif

What is the electric field between the left and middle sheets?

What is the electric field between the middle and right sheets?

Since it says the sheets are very large, and there is only a 0.2m separation between the surfaces, it seems logical that the E-field can be considered as calculating the field at a point close to the surface with the following equation:

E = charge density / (2*epsilon) = 6.5e-6/(2*(8.85e-12)) = 3.67e5 N/C

But apparently that is wrong even though I am reading it straight from my text??

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