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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?.
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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
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?
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.
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.
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.
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.
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.