00:01
What are the x and y components of the magnetic field at point a? so at point a, we're going to have the contributions of both wires.
00:10
So this is a contribution of our magnetic field from the b direction, and we also have this contribution, b, b.
00:19
We also have a contribution from c, the c wire.
00:24
Now the magnetic field, due to wire b, is equal to mu not divided by 2 pi times the current of b divided by our length.
00:35
Now due to to wire c is equal to mu not divided by 2 pi times ic divided by l.
00:43
Now our net magnetic fields at point a, b net, is equal to 2b, sign of 60 degrees, because this is our angle 60 degrees for this triangle.
00:58
So we're going to have 2 times mu not over 2 pi times ic...