Magnetic field at center of wire

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SUMMARY

The discussion focuses on calculating the magnetic field at the center of a wire with two negative currents flowing through drills. The user initially considers the magnetic field produced by the original wire, which is zero at its center, and analyzes how the magnetic field changes with the introduction of additional current sources. The conclusion reached is that the net magnetic field remains unchanged due to the specific angular relationship of the fields produced by the currents, which form a 120-degree angle with each other.

PREREQUISITES
  • Understanding of Ampère's Law
  • Knowledge of magnetic field concepts
  • Familiarity with current density and its effects
  • Basic vector addition of magnetic fields
NEXT STEPS
  • Study Ampère's Law and its applications in magnetic field calculations
  • Learn about the Biot-Savart Law for magnetic field determination
  • Explore the concept of magnetic field superposition
  • Investigate the effects of current density on magnetic fields in different configurations
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Physics students, electrical engineers, and anyone interested in electromagnetism and magnetic field analysis.

cupid.callin
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Homework Statement


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The Attempt at a Solution



how i did was that i consider the two negative currents flowing through two drills ... and let current from the original wire is out of plane

so on first drill mag field will be towards left (field by original wire at its center is 0)

as after second drill , current density remains same and area dec ... so current also dec.

now the field due to new line will be perpendicular to line joining its center ... so field at center shall inc ... its not the answer :cry:
 

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Oh ... solved it ... both field will have 120 angle ...

so net will remain same ... :p
 

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