QUESTION 4
[18]
Two long current-carrying wires are shown in Fig 1. They are carrying the same current I which are pointing in opposite directions. Their separation is s. A field point Q lies in their plane, a distance ñ from their midline.
4.1 Find the field intensity H from each wire at point Q. (10)
4.2 if ñ>>s, show that the total field at Q is (8)