electric field question

[wlee43]

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Suppose the energy stored in the electric fi eld in a particular
region of space is 50 J in a region of volume 10 mm3. What is
the average electric field strength in this region?

I can't figure this out someone help

Im using PE=1/2 X E0 X E^2 X Volume but Im not getting the correct answer

 

[dranet]

I think you may have hit a concept question here. The Electric Field within a conductor is zero. I think all the numbers there are decoys.

 

[MT Headed]

You have the correct equation. I would check your units very carefully, especially on e0 to make sure everything cancels correctly. Also, the given volume is 10mm^3, so you have to convert from mm to m a total of 3 times to get the desired units of m^3.

This smells a lot more like a homework question than a mcat question (the mcat would surely give you that obscure equation in the passage). Maybe if you post your math, units, and conversions you or somebody else could find the error.