The two insulated, current-carrying wires in Figure P28.7 cross at right angles, and each carries a current \(I\). The locations labeled 1-4 are all in the plane defined by the wires, with each location a perpendicular distance \(d\) from both wires. At how many of these four locations is the magnetic field

(a) directed out of the page,

(b) directed into the page, and

(c) equal to zero?

Data from  Figure P28.7

Transcribed Image Text:

P P