Question

Answer Question 10 ONLY please.

7) These equations can be solved in terms of integrals over the retanded source distributions: Acan-sitiAi.-4.. van"in.leidiT-ae.. Et E Explain the physical principles underlying these expressions. 3 marks Deternine the vector potential due to a short wire running from (0,0,-L/2) to (0, 0, +1/2) carrying a current I -lo cos(t)(consider only points at distancer >>L from the origin). 3 mark Show that the field strength F is invariant under a gauge transformation 2 marks

Answer 1

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