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Q & A: Magnetic field calculation

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Most recent answer: 02/21/2008
Q:
A long straight wire carries a current of 8A.a portion of the wire is then bent into a circular loop(1 turn) of radius 0.02m. Find the magnitude and direction of the net magnetic field at the center of the loop?
- sammy (age 21)
accra, Ghana
A:
We don't do homework problems on this site but try to explain things.  This problem illustrates the idea of superposition of solutions to static fields: a linear combination of several field configurations is also a solution of the basic field equations.  In this case it's a sum of a circular loop and a straight wire.  I'm sure you can do it yourself.

LeeH

(published on 02/21/2008)

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