Magnetic Field due to a finitely long wire

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Homework Help Overview

The discussion revolves around calculating the magnetic field due to a finitely long wire, specifically using the Biot-Savart law. Participants are exploring the contributions of different segments of the wire to the total magnetic field.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to apply the Biot-Savart law but expresses confusion regarding the integration process for certain segments of the wire. There is also a question about the total magnetic field's direction and magnitude, particularly concerning the contributions from different segments.

Discussion Status

Some participants have provided links to external resources, and there is an ongoing exploration of the correctness of the total magnetic field calculation. While there is some agreement on the direction of the magnetic field, the discussion remains open with various interpretations being considered.

Contextual Notes

The original poster is working under the constraints of a homework assignment, which may limit the information they can provide or the methods they can use.

Flyer888
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Homework Statement


https://imagizer.imageshack.us/v2/935x701q90/540/k2taHx.jpg

Homework Equations

The Attempt at a Solution


I think I got the idea to solve the B1 (the circular segment) and the ones that I wrote "zero", but I'm a bit confused on the straight ones (B2 and B3)...
I'm using the Biot-Savart law, but have no idea what goes inside the integral of (dl x r hat)/r2
 
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haruspex said:
Thanks for the help!

Therefore, is it correct if the total magnitude of B is B1+B2+B3 (where B2 and B3 are equal and in same direction), and all of them have a direction pointing into the page?
 
Flyer888 said:
Thanks for the help!

Therefore, is it correct if the total magnitude of B is B1+B2+B3 (where B2 and B3 are equal and in same direction), and all of them have a direction pointing into the page?
Sounds right.
 

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