[填空题]
Two long straight aluminum wires, each of diameter 0.50 mm, carry r-myh3f*gu5 b the same nws-ntlwjnn ,6 dj7c*lk e ;enl9;8 )rcurrent but in opposite directions. They are suspended by 0.50-m-long strings as shown in (Fig. Below). If the suspension strings make an angle onwj,d7 snlnel 8j-w l n9 nt6;;rk)*ecf 3.0$^{\circ}\,$ with the vertical, what is the current in the wires? A
