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QUESTION 12 Save Answe 52A flat wire, radius a, carries a constant current /, uniformly distributed over its cross section. A narrow gap in the wire, of width w «a, forms a parallel-plate capacitor. As shown in Fig. 3 Fig. 3

QUESTION 12 Save Answe 52A flat wire, radius a, carries a constant current /, uniformly distributed over its cross section. A narrow gap in the wire, of width w «a, forms a parallel-plate capacitor. As shown in Fig. 3 Fig. 3

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Question 12
Fig. 3 i. Find the electric and magnetic fields in the gap, as functions of the distance s from the axis and the time t. (Assume the charge is zero at t = 0.) ii. Find the energy density Uem and the Poynting vector S in the gap. Note especially the direction of S.
Transcribed Image Text:Fig. 3 i. Find the electric and magnetic fields in the gap, as functions of the distance s from the axis and the time t. (Assume the charge is zero at t = 0.) ii. Find the energy density Uem and the Poynting vector S in the gap. Note especially the direction of S.
QUESTION 12 Save Answe 5.2 A flat wire, radius a, carries a constant current I, uniformly distributed over its cross section. A narrow gap in the wire, of width w « a, forms a parallel-plate capacitor, As shown in Fig. 3 a Fig. 3
Transcribed Image Text:QUESTION 12 Save Answe 5.2 A flat wire, radius a, carries a constant current I, uniformly distributed over its cross section. A narrow gap in the wire, of width w « a, forms a parallel-plate capacitor, As shown in Fig. 3 a Fig. 3
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