. B(w.h) x d Z A thin wire is part of a complete electrical circuit that carries current I. For this prob- lem, consider only the piece of wire of length d that starts at the origin and lies on the r-axis as shown in the figure. Choose the integral that will correctly calculate B(2 = w, y = h). Note this point is in the x - y plane.(w+ x)(-x) dx I po 1 . 12 - 2wx + w2 + h2 w (w+x)(-x) dx I po 2 . - AT (12 - 2wx + w2 + h2)3/2 (w+ x)(-x) dx O I po 3 . 12 - 2wx + w2 + h2 47 JO 2 dx Ihpo 4 . 12 - 2wx + w2 + h2 47 Jo -2 dx Ihuo 5. Jo (12 - 2wx + w2 + 2)3/2 Ihpo 6. 4 7 12 - 2wx + w2 + h2