Hi, I've got a question regarding application of the Biot-savart law along finite wire. There is a great explenation of this problem in the MIT paper but this does not cover one case. 1. The problem statement, all variables and given/known data My question is: does the equation defining magnetic field in point P(x,y) also applies to the point P_1(x,y) (as in the picture below) which is not in boundaries of the wire? 2. Relevant equations Magnetic field in point P(x,y) (as in the above figure) along finite wire is: 3. The attempt at a solution My guess is: yes, just because I can put P_1 coordinates in the equation, but intuition tells me that I am omitting something and unfortunately I don't know what.