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An infinitely long conductor of radius 18 cm carries a uniform current with
J = 142 A/m2, the magnetic vector potential at p= 9 cm is
%3D
O a. -106.88ây nWb/m
O b. -35.63åz nWb/m
OC-106.88åz nWb/m
O d. -35.63ây nWb/m
e. -178.13åz nWb/m
O f. -178.13åy nWb/m

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