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Homework Help: Magnetic field at a point due to current carrying wires

  1. Nov 29, 2007 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    B =( [tex]\mu[/tex] * i * [tex]\phi[/tex] ) / (2 * [tex]\pi[/tex] * R)

    3. The attempt at a solution

    i wanted to add one more equation, but im having difficulty in writing them. whatever!!!

    As you can see from the question there are 6 segments of current carrying wires.

    For segment 1 which is labeled in the picture above, B = 0, because the wire goes directly towards the point.

    For segment 2 (the semi-circular arc), the magnetic field is calculated using the equation above. where [tex]\phi[/tex] = [tex]\pi[/tex].

    For segment 3, i calculated the B-field and i think its correct....it is 0.0000035969 Tesla.

    For segment 4, the B-field is twice as much of segment 3.

    the problem now is that i dont know how to calculate the field due to segments 5 and 6. Im not sure if they produce any magnetic field that act on point A.

    so please if anyone could help as soon as possible.

    thanks in advance
    Last edited: Nov 29, 2007
  2. jcsd
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