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Illustration Current-carrying coil with dimensions and magnetic field

<span>Current-carrying coil with dimensions and magnetic field</span>
Current-carrying coil with dimensions and magnetic field Integration path for the magnetic field of a long coil
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An electric current flows along a long coil with \(N\) windings and the length \( l \). This current generates a homogeneous magnetic field \( \class{violet}{B} \) inside the coil.