Suppose we have an infinitely long wire carrying a current of 3.5 A. It is bent into an L-shape extending into positive infinities along the x- and y- axes. Find the magnitude of the magnetic field at a point P with coordinates (0.6 m, 0.6 m).

I have no idea how to start this. I know that we have to find the magnetic field and have to use the Biot-Savart Law..

Question

Suppose we have an infinitely long wire carrying a current of 3.5 A. It is bent into an L-shape extending into positive infinities along the x- and y- axes. Find the magnitude of the magnetic field at a point P with coordinates (0.6 m, 0.6 m).

I have no idea how to start this. I know that we have to find the magnetic field and have to use the Biot-Savart Law..

orb · Answer

The reading before the question:

anonymous · Answer

It seems that what you need to do is calculate the magnetic field effect of the wire at the horizontal and the field effect of the wire at the vertical:

$$B=\frac{ \mu_0 I }{ \pi r }$$
since the distances are the same (0.6m = r) you can multiply B by two and get the above equation. now just plug in for I and r

orb · Answer

Thanks! I'll try it out!