Dallas Jett Armstrong v (Student - section: 730) ntists and Engineers IT L Messages Courses Help Logout a Course Contents Chapter 28 28.44 (%) Timer T a ;j) A long, straight wire has a 13.7 A current flowing in the positive x-direction, as shown in the figure. Close to the wire is a square loop of copper wire that carries a 2.23 A current in the direction shown. The near side of the loop is d = 25.1 cm away from the wire. The length of each side of the square is @ = 1.97 m. Find the net force between the two current-carrying objects. L ] Notes @ Evaluate Jgp)Feedback (=) Print Ans : - Given I = 13.TA I, = 2.23 A d = 35-1 (m , a = 1.97 m Magnetic field at a distance d and ( atd ) IS B = MOTI 217 ( atd ) Magnetic force on the near side Is F. = B , I , a direction is downward . Magnetic force on the for side F2 = B I , a direct is upward Magnetic forces on side arms are zero due to perpendicular current . Net magnetic force Is F = F - F, = ( B , - B 2 ) I 2 q No Il = 2 17 d 217 (0 +d ) F = NO I, I 2 Q [a - atd ] F = 2X10 X 13.7 X 2.23 X D - 351 1 . 97 + 0 .351 X 1. 97 F = 61 . 102 X10 X 285 - 0-43J X 1.97 F = 291 . 297 X 10 - 7 F = 291 X10 N