A current I runs through a wire which is straight, bends around a semicircle or radius R and then is straight in again in the opposite direction. Find the magnitude of the magnetic field at the origin.
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First, we need to find the magnetic field at the origin due to the straight wire segments. We can use the Biot-Savart law for this: dB = μ0/4π * Idl x r / r^2 where dB is the magnetic field element, μ0 is the permeability of free space, I is the current, dl is Show more…
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