噓 cownn:幫你寫作業嗎 03/22 12:05
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噓 albert321528:推樓上真男人 03/22 14:34
consider a long cylindrical coaxial capacitor with an inner conductor of radius
a,an outer conductor of radius b,and a dielectric with a dielectric constant
k(r),varying with cylindrical radius r.the capacitor is charged to voltage V
calculate the radical dependence of k(r) such that the energy density in the
capacitor is constant.calculate the electric field E(r) for these condition
請寫過程謝謝
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