- #1
HelpMeh
- 13
- 0
Hi, I am having some trouble understanding the formula for the magnetic field for a straight wire.
The equation is:
B = (μ/4∏)(I/R)(sinθ2 - sinθ1)
the picture looks like this:
...___
__| . |____
with the current coming in from the left. To find the magnetic field at the point (middle) You need two angle, which is where the issue comes up. I am not sure which two angles to use.
What i know:
im pretty sure to find the magnetic field generated by the vertical sides you would sweep out an angle from 0 to 45° (from bottom of the side to the top). then multiply by 2 since both sides will create the same B field, i have no idea what to use for the top side, possibly angle 1 being 45 and angle 2 being 135, but you get zero if this is done.any help is appreciated.
The equation is:
B = (μ/4∏)(I/R)(sinθ2 - sinθ1)
the picture looks like this:
...___
__| . |____
with the current coming in from the left. To find the magnetic field at the point (middle) You need two angle, which is where the issue comes up. I am not sure which two angles to use.
What i know:
im pretty sure to find the magnetic field generated by the vertical sides you would sweep out an angle from 0 to 45° (from bottom of the side to the top). then multiply by 2 since both sides will create the same B field, i have no idea what to use for the top side, possibly angle 1 being 45 and angle 2 being 135, but you get zero if this is done.any help is appreciated.