EM Ampere's law G. Several current-carrying wires (not shown) create a magnetic field around the Amperian loop shown. The clockwise line integral of the magnetic field around the loop is 2ud. 1. Consider the following student discussion: Student 1: "The line integral is positive, so current is in the same direction as the area vector. There must be two wires crossing through the loop, each carrying a current I into the page.' Student 2: "I disagree. I chose the area vector out of the page, so current is flowing out of the page." Student 3: "The line integral clockwise around the loop is positive, so current should be flowing clockwise around the loop." All three students are incorrect. Describe the errors in their reasoning. 2. What is the correct conclusion that can be drawn about this system? Explain. H. Four pairs of identical square wires are shown below. The left wire of each pair has a uniform current density of 2 A/m out of the page, and the right wire of each pair has the same density into the page. Four Amperian loops are also shown. Each has the same height h, but they have varying widths N + O 4-- - -- O O Use Ampere's law to determine the line integral of the magnetic field around each loop. Check your results for part II with a tutorial instructor before continuing. Tutorials in Introductory Physics, Physics Education Group, Depart University of W