4 sides of the wire can produce a B-field

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    B-field Wire
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SUMMARY

The discussion centers on the magnetic field (B-field) produced by a current-carrying wire, specifically addressing the right-hand grip rule and its application to four sides of a wire configuration. Participants question why the B-field direction is not downward and why it appears to be out of the paper, despite the wire gaining weight. The calculations involving the formula i L x B are emphasized to determine the forces exerted on different segments of the wire. The conversation highlights the importance of understanding the vector nature of magnetic fields in relation to current direction.

PREREQUISITES
  • Understanding of the right-hand grip rule in electromagnetism
  • Familiarity with the formula for magnetic force: F = i L x B
  • Basic knowledge of magnetic fields and their vector properties
  • Concept of current direction and its effect on magnetic field orientation
NEXT STEPS
  • Study the application of the right-hand rule in various wire configurations
  • Learn about the Lorentz force and its implications in electromagnetism
  • Explore the concept of magnetic field lines and their representation
  • Investigate the effects of current direction on magnetic field strength and orientation
USEFUL FOR

Physics students, electrical engineers, and anyone interested in understanding the principles of electromagnetism and magnetic field interactions in current-carrying conductors.

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clovergogo said:
http://upload.lsforum.net/users/public/m28175Untitledw43.jpg

Q 21 why the is not downward?? it gains weight!
The wire runs into/out of page. Calculate i L x B.
Q22 why the direction is not out of paper, by right hand grip rule, 4 sides of the wire can produce a B-field which is out of paper!?

i L x B again. This time, solve for B.

What forces are exerted on AB and CD? On BC?

Don't be concerned with the direction of the B fields generated by the wire. Use the formula!
 

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