Question

Question no 11
If you were to calculate the poynting vector for various points in and around a transformer, what would you expect the field pattern to look like? Assume that an alternating potential difference has been applied to the primary windings and that a resistive load is connected across the secondary windings.

Answer 1

wide, souse ande sesistor load. led the transformey is dans lones corth Ac uldage in the secondary assume to have come biili strechao coith. permeability resol. 그 I >H. BRO ter secondary coil. coil? Hi. If 17* 7s S. si primary ett for 4721, Lp = (5a M. lo and po current (mutual inductance), giren by qo- v R СәLP 18 ē If 늦 then colp>>k, IP Iz te delivened by i Tima aurrage power 12/2R soune between. in the region vec for Cose and source and cod and serwera Rc be determined by cassuming The transformer system two-corze transmission lines. Poynting vector can as

Outside the ting, According the corres into is dhe Coze. in to thumbs rele, cohen the current a concluctor is to the night then magnetic freed between paper and election foeld is down words. - poynting rector ,s= EXH. is to rought of transmission lines. Inside the cose, magnetic fieldl. B: Moh. related to changing electric fiecdi cwhich circulates around its circular cendredone Thu poynting Lector points inwares towards this circle cohola B is incrcaling- the induced elecha field by changing magnetic field. inside the con. There for the between. electric field is upwarch , and o coil. cohere Be mole. The vector points to right from. carries enerary and the po to a wondings. ve poynting