How to find B field in paralle plate capasitor

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SUMMARY

The discussion focuses on calculating the magnetic field (B field) in a parallel plate capacitor setup, where the plates have a length (L), width (w), and separation distance (h). The initial approach used the equation B dl = μI, but the correct formulation provided in the reference material is B = μK = μI/W. The confusion arises from the relationship between the current direction and the resulting B field, particularly when considering the geometry of the capacitor and the flow of current.

PREREQUISITES
  • Understanding of electromagnetic theory, specifically Ampère's Law.
  • Familiarity with the concepts of magnetic fields and current flow.
  • Knowledge of parallel plate capacitor configurations.
  • Ability to interpret and analyze equations related to magnetic fields.
NEXT STEPS
  • Study Ampère's Law and its applications in calculating magnetic fields.
  • Research the relationship between current direction and magnetic field orientation.
  • Examine the properties of parallel plate capacitors in electromagnetic contexts.
  • Explore transmission line theory, particularly in relation to current flow and potential difference.
USEFUL FOR

Students studying electromagnetism, physics educators, and anyone involved in electrical engineering or related fields who seeks to understand the behavior of magnetic fields in capacitor systems.

leonne
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Homework Statement



how to find B field in parallel plate capacitor
the plates have a length L and width w and separated a distance h

Homework Equations


B dl=\mu I


The Attempt at a Solution


I am trying to find the B files i thought u would use
B dl=\mu I
but the book has the answer as B=\mu K =\mu I/W
I thought the answer would be like B=\mu I/L does it have to do with the direction of the b files? the current is flowing to the right
thanks
 
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leonne said:

Homework Statement



how to find B field in parallel plate capacitor
the plates have a length L and width w and separated a distance h

Homework Equations


B dl=\mu I


The Attempt at a Solution


I am trying to find the B files i thought u would use
B dl=\mu I
but the book has the answer as B=\mu K =\mu I/W
I thought the answer would be like B=\mu I/L does it have to do with the direction of the b files? the current is flowing to the right
thanks

Could you please clarify your question? Capacitors do not generate B-fields typically, so there must be more to this problem? Can you post the figure from the question?
 
well suppose to find the power transported down a cable of ex7.13 and problem 7.58., assuming the 2 conductors are held at pot diff V and carry current I
I did the one for 7.13 but this one is for 7.58
for problem 7.58
says a certain transmission line is constructed from 2 thin metal ribbons of width w a very small distance h apart the current flows down one strip back along the other

can't find a figure but its 2 rectangles parallel to each other
 

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