00:01
Hello, here i have to answer question b.
00:02
As far as i understand i have to magnitude and direction of the magnetic field at point p.
00:07
Let's make the sketch.
00:09
So first i'm going to show currents i1, i2 and point p which is at the distance d from i2 and here i1 is at the distance d from i2 as well.
00:25
Alright, now let's show the axes y and x.
00:31
And here let's show the current created by i2, the field created by i2, b2 is directed as shown.
00:42
And now let's show b1.
00:48
B1 will be perpendicular to the line that connects current i1 to this point p.
00:58
So that's the line connecting and now let's show the perpendicular b2.
01:09
Okay, now it's time to find the angles.
01:13
Let's show the angle 45 degree and therefore this angle is also 45.
01:28
Okay, now we can find, yeah, let's label this b as bp, the one which we have to calculate and let's find bpx.
01:44
Bpx here is negative b2 minus b1 sine 45 degree.
02:10
And here the distance is d square root of 2.
02:20
Alright, now let's calculate it.
03:01
Now let's calculate...