Question

A semi-infinite wire runs along the positive yaxis, beginning at the origin (x= y= 0) and extending infinitely far in the +ydirection. If the current in the wire is 12 A, what magnetic field does it create on the xaxis at the point x= 3.5 cm?
A) 0 T
B) 3.4 x 10-5T
C) 6.9 x 10-5T
D) 1.4 x 10-4T
E) 4.3 x 10-4T

Answer

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