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Chapter 23

Chapter 23. Faraday’s Law and Inductance (Inductance). Inductor and Inductance. Capacitor: store electric energy Inductor: store magnetic energy. Measure how effective it is at trapping magnetic energy. Inductance of a solenoid. l. Self-Induction. Always resists the change in current.

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Chapter 23

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  1. Chapter 23 Faraday’s Law and Inductance (Inductance)

  2. Inductor and Inductance Capacitor: store electric energy Inductor: store magnetic energy Measure how effective it is at trapping magnetic energy

  3. Inductance of a solenoid l

  4. Self-Induction Always resists the change in current

  5. The sign of ξL If ξLis positive, then the induced emf points in the same direction as the current. If ξLis negative, then the induced emf points in the opposite direction as the current.

  6. RL Circuits (“charging”)

  7. Example

  8. “Discharging”

  9. Energy in an inductor

  10. The wonders of magnetic field

  11. View from afar

  12. Big magnetic field

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