what is the magnitude of magnetic field at a point x which is equidistannt from conductors
Answers
1. The problem statement, all variables and given/known data Two long parallel wires are a center-to-center distance of 4.90 cm apart and carry equal anti-parallel currents of 3.70 A. Find the magnetic field intensity at the point P which is equidistant from the wires. (R = 10.00 cm). http://imageshack.us/a/img11/3812/twoparallelwires.jpg [Broken] 2. Relevant equations dB = μo*I*(dL → →xdR → →)/(4*pi*r^3) 3. The attempt at a solution Well first I tried multiplying the equation for magnetic field of an infinite line (μo*I/(2*pi*r) by two since there are two wires. then I realized that since the current is flowing in opposite directions, the y-component of the field, so to speak, would cancel out, and now I'm stuck. Here is the solution, but I want to know how to arrive here (and more specifically I'd like to know why we're multiplying the infinite line equation by the y-component): d*I*μo/(2*pi*(R^2+ (d/2)^2)
Reference https://www.physicsforums.com/threads/magnetic-field-at-a-point-due-to-two-parallel-wires.644575/