(1 point) A coaxial cable has conductor radii a = 5 mm and b = 12 mm. The region around the inner conductor, where $a < ho < c$ with c = 8.5 mm, is filled with material of relative permeability $mu_r = 200$. The region $c < ho < b$ is filled with air. Find the inductance per unit length. ANSWER: Inductance per unit length = ____ H/m
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First, we need to find the magnetic field inside the coaxial cable. We can use Ampere's law to do this. Since the cable has cylindrical symmetry, we can use a circular path around the inner conductor: ∮B·dl = μ0Ienc where B is the magnetic field, dl is an Show more…
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