- #1
kregg34
- 12
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Homework Statement
For a lab we need the equation of the magnetic field strength produced by a solenoid a distance r away from it (outside of it). I tried looking online and couldn't find one that didn't involve a bunch of cross products or similar. Wonder if anyone knows the formula? I know its of the form B(r) = (1/r^3)((some stuff*unit vector in r direction) + (some stuff*unit vector in θ direction)). The experiment only looked at the field strength in the xy-plane (or in polar the rθ-plane) so I do not need the third unit vector in the B(r) equation.
My professor said we can find it online but no luck.