Example Two parallel wires with current flowing in the same direction, 12Ai=& 23Ai=. Find the field at vertex the of 30-30-120 isosceles triangle. Because the magnetic field is perpendicular to radii away from the wires, the angle between BGand the horizontal is 903060°−° =°(true for both BGs). x: 12cos60cos601.25μΤBB° +° =, y: 12sin 60sin 602.165μΤ
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