1 / 7

Energy of a magnetic dipole in a magnetic field

Energy of a magnetic dipole in a magnetic field. You don’t realize it yet, but we have been talking about magnetic dipoles for the last 5 slides. A current loop, or any other body that experiences a magnetic torque as given above, is called a magnetic dipole. Energy of a magnetic dipole?.

jdick
Télécharger la présentation

Energy of a magnetic dipole in a magnetic field

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy of a magnetic dipole in a magnetic field You don’t realize it yet, but we have been talking about magnetic dipoles for the last 5 slides. A current loop, or any other body that experiences a magnetic torque as given above, is called a magnetic dipole. Energy of a magnetic dipole? You already know this: Today: Electric Dipole Magnetic Dipole Homework Hint Homework Hint

  2. Example: a magnetic dipole of moment is in a uniform magnetic field . Under what conditions is the dipole’s potential energy zero? Minimum? Under what conditions is the magnitude of the torque on the dipole minimum? Maximum?

  3. Example: a magnetic dipole of moment is in a uniform magnetic field . Under what conditions is the dipole’s potential energy zero? Minimum? Under what conditions is the magnitude of the torque on the dipole minimum? Maximum? IR  IR IL     = 90 B B   IL A A Potential energy is zero when cos  = 0, or when  = 90 or 270.

  4. Example: a magnetic dipole of moment is in a uniform magnetic field . Under what conditions is the dipole’s potential energy zero? Minimum? Under what conditions is the magnitude of the torque on the dipole minimum? Maximum?  IR IR   B  A B  = 0  IL A  IL Potential energy is minimum when cos  = 1, or when  = 0 or 180.

  5. Example: a magnetic dipole of moment is in a uniform magnetic field . Under what conditions is the dipole’s potential energy zero? Minimum?Under what conditions is the magnitude of the torque on the dipole minimum? Maximum?  IR IR   B  A B  = 0  IL A  IL Torque magnitude is minimum when sin  = 0, or when  = 0 or 180.

  6. Example: a magnetic dipole of moment is in a uniform magnetic field . Under what conditions is the dipole’s potential energy zero? Minimum? Under what conditions is the magnitude of the torque on the dipole minimum? Maximum? IR  IR IL     = 90 B B   IL A A Torque magnitude is maximum when sin  = 1, or when  = 90 or 270.

  7. Example: a magnetic dipole of moment is in a uniform magnetic field . Under what conditions is the dipole’s potential energy maximum? IR   B   IL A I left this for you to figure out.

More Related