Does a Capacitor Have a Magnetic Field?

AI Thread Summary
The discussion revolves around the inquiry of whether a capacitor generates a magnetic field and how to describe it mathematically. Key points include the need for additional information such as the capacitor's geometry, current flow, and whether it is part of an active circuit. Participants suggest that the question may lack clarity or context, particularly regarding the relationship between the magnetic field and the circuit's radius. The conversation emphasizes the importance of understanding the specifics of the circuit and current to derive the appropriate law for the magnetic field. Overall, the complexity of the question highlights the need for precise details to formulate an accurate response.
Fabio97
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Homework Statement
What is the law describing the magnetic field as a function of the radius into a capacitor?
Relevant Equations
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If this is the complete statement of the homework problem then you could start by listing the things that you don't know. For example,

1) What is the shape or geometry of the capacitor?
2) What is the the current flow into the capacitor?
3) Is the capacitor currently inside an active MRI?
 
The request is to write the law B(r), using the current i that flows in the circuit (the capacitor is in a activate circuit). The capacitor has two round parallel plates. We have no numerical values.
 
Welcome to the PF. :smile:
Fabio97 said:
Homework Statement:: What is the law describing the magnetic field as a function of the radius into a capacitor?
I'm pretty sure that there are some words missing in the translation and/or there is a figure of the circuit that goes along with the question.

For example:
  • What is the law describing the magnetic field as a function of the circuit wire loop radius connected to a capacitor?
  • What is the law describing the magnetic field as a function of the AC current i(t) flowing through a capacitor as a function of the radius of the capacitor?
  • (other tries?)
 
berkeman said:
and/or there is a figure of the circuit that goes along with the question
Something like this maybe?

 
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