00:01
Hello everyone, in the present problem it is given that i equal to current in the wire and side length equal to a.
00:08
Coming to the solution, we have according to the question, we have 4 .1, 2, 3 and 4 .4.
00:56
So we have the corners named as points 1, 2, 3 and 4 and the length of each side is 8.
01:08
At the center of this cross section we have b1 pointing towards 0 .4, b2, pointing towards 1, b2, pointing towards 1, b3 again pointing towards 4, and b4 pointing towards 1.
01:40
The angle between this direction of magnetic fields is 90 degrees.
01:57
Direction of magnetic field is determined by right -hand rule.
02:24
Let us calculate magnetic field.
02:38
Due to all wires, then the direction of b2 and b4 are same and b1 and b3 are same.
03:17
So, mod of b1 is equal to mod of b2 equal to mod of b3 equal to mod of b4 equal to mu not i divided by 2 pi t which is equal to mu not i divided by 2 pi multiplied by a divided by root 2.
03:57
Because d is equal to a divided by root 2.
04:05
So we may draw magnetic field vectors magnetic field vectors and here we have b1 vector perpendicular to v1 we have the b2 vector along...