Two infinite lines of current, one with current I = 2.5 A into the page and one with current I = 2.5A out of the page are placed at locations (−d, −d) and (−d, d), respectively. Assume d=25.0 cm.[Consider ˆx right and ˆy up the page.]
A. In unit vector notation, what is the magnetic field at (0,0)?
B. Where should a third line of current with I = 2.5 A into the page be placed so that the total magnetic field is 0 at (0, 0)?