Solving a Biot-Savart Problem: Idx, r and dB

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SUMMARY

The discussion centers on solving a Biot-Savart problem involving the calculation of magnetic flux densities at a specific point due to a current element defined as Idx(ax+ay) A located at P(1,-2,2). The key equation used is the Biot-Savart law, expressed as dB = (K)(IdI x r)/rr. Participants debate the interpretation of Idx and whether it should be treated as Idl, as well as the necessity of integration to find the magnetic field B. The nature of the current element, whether it represents an infinite wire or a point source, is also questioned.

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ermines
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i personally think that this is just a very simple problem since the problem only requires plugging the right values into the formula. I'm just having trouble with one minor detail.

Homework Statement



For the current element Idx(ax+ay) A situated at P(1,-2,2), find the magnetic flux densities at P(2,-1,3).

Homework Equations



Biot-Savart

dB = (K)(IdI x r)/rr

The Attempt at a Solution



my only problem in here is that I'm having a hard time figuring out what idx is? do i just substitute it for Idl then just get its cross product with r and so on? also, do i need to actually integrate it to get B?

that is all and thanks.
 
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What is Idx(ax+ay) ?
What kind of current element do we have here ? Wire, infinite wire, semi infinite wire ?

marlon
 
hmmm...never thought of that question, marlon...

i suppose that it is an infinite wire? or can't it just be just a point with such property? will it actually make a difference?
 

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