(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A conductor in the shape of a square loop of edge length l = 0.360 m carries a current I = 10.0 A. Calculate the magnitude and direction of the magnetic field at the center of the square.

2. Relevant equations

∮B⃗ ⋅dr⃗ =μ0 Ienclosed Ampere's Law

B=μ04π ∫I dl⃗ ×rˆr2 Biot-Savart

3. The attempt at a solution

I have seen the solution and gotten the correct answer using the formula for the B field surrounding a long, thin, conductor, derived from the Biot-Savart law.

B=(mu_0*I)/(2*pi*a) , where a is the distance from the wire to point in question.

My question is why is not possible to use Ampere's law to solve this problem. I am still in the process of tying to learn/understand Ampere's law.

Thank you

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# Homework Help: Ampere's Law vs Biot-Savart arouns a Square

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