Question

Question 2 1. Two perfectly conducting cylinders ra and rb form an inductor of length d, as shown in the figure below. The total current I flowing on the surface r-α of the inner cylinder is returned through the outer conductor r - b. The medium between the two conductors has magnetic permeability m a) Find the magnetic field intensity H everywhere, disregarding "edge effects" (i.e. assuming that the a, b and hence, it can be considered as infinite) length d of the conductors is very large compared to 4 points) b) Determine the inductance L using the following two methods and confirm that they both result in the same answer: . Applying the definition L-0/1, where Ф is magnetic flux through the inductor (5 points) Finding the total magnetic energy Wm stored in the inductor and using the relation L - 2Wm/12. (5 points)

Answer 1

Hello user,

2 2 Ir Tr2 O-

enc = (c)r b

州, . Tonc lb a 2n /a 2千千 by in

2. dv 2 2p4n r 26 412 In

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