Question

ELECTRODYNAMICS

A current flows along a wire which has its two endings forming angle of zero: an Note that O is the center of the semicircular arc of radius R. a) Calculate the magnetic field B at O. H Now there is an angle alpha different from zero between the two endings: a R Note that the semicircle still has the same radius R b) Calculate the magnetic field B at O under this new scenario. Compare this result with the obtained in a)lexplaining briefly how did the magnetic field change.

Answer 1

Now he above ire Can be Comaudred as to hait wmfunlE Me amd a half circulam Lovre Magnee field at tang due to t hait nfila Now The wire BI = 4R 4TR ZTTR magmec fieud ane to hauf cincular wie Now AB B2- MOT 4 R Resutant magnetic fed oto MOI MOI 4R Ansner 2TR MOT 2R manetsc feid at o half nfunla dne to sT NOW 4RD mametc fied at o due to 2nd hatt mfila vovic Jhe dne to half Cirular ore Jhe magnehc fieud MOI 4R 40ta masnatic ferd at o Mo MO Cos + 4R 4ITR 4 MR 1 Mo F L Cos 4R IT