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    Engineering What is the magnetic field of a half toroid?

    Hello, I would like to know what is the magnetic field of a half toroid. Would we use Ampere's law? So, considering that the integral is equal to BA, we would have BA = μo * i, then B = (μo * i) / r. But, using Biot-Savart's law, by symmetry, it seems that the vector sum of all the...
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    Engineering Capacitance for a capacitor with two dielectrics

    The geometry of the capacitor can be either cylindrical or spherical.