Languages homework help
Languages homework help. An alternating current I = I_0 cos(? t) flows down a long straight wire and returns along a coaxial conducting tube of radius a.(a) In what direction does the induced electric field point?(b) Assuming that the E-field is zero outside of the conducting tube find E(s,t).(s: radial coordinate in cylindrical coordinates, distance from inner wire)(c) Find the displacement current density(d) Find the total displacement current Id(e) Compare the ratio of Id and I. If a=1mm, how high would the frequency ? have to be for Id to be 1% of I?
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