In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 29 cm. The currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3, and each wire carries 15 A. What is the magnitude of the net magnetic field at the square's center?

Two circular loops of wire, each containing a single turn, have the same radius of 3.10 cm and a common center. The planes of the loops are perpendicular. Each carries a current of 2.10 A. What is the magnitude of the net magnetic field at the common center? Number i eTextbook and Modia Units +

there are three parallel wires in a row. The outside two have currents directed in the + X direction and the middle is in the -X direction. What direction is the magnetic field on one of the outside wires?

In the figure, point P2 is at perpendicular distance R = 25.1 cm from one end of straight wire of length L= 14.1 cm carrying current i = 0.727 A. (Note that the wire is not long.) What is the magnitude of the magnetic field at P2? Pe R R Number Units