1. Lecture 09 - Inductors and Capacitors
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Lecture 09 - Inductors and Capacitors

2. Physics of an Inductor (1/2)
Coil current, i
Core flux, f
Toroid of permeability, m, area, A, and length lm.
Flux linkage, l
Coil of N turns

3. Physics of an Inductor (2/2)
Mmf: F = N·i
Magnetic Reluctance:
Core Flux:
Flux linkage:

4. Voltage Drop Across Inductor
Note Passive Sign Convention

5. Energy in an Inductor
Stored Energy

6. Physics of a Capacitor (1/3)
Current, i, and
Charge, q.
Plate area, A
Plate separation distance, g
Voltage across
plates
Dielectric material of permittivity, e.

7. Physics of a Capacitor (2/3)
Vector fields:
Electric Charge:

8. Physics of a Capacitor (3/3)
Current:
Capacitance:
Note Passive Sign Convention:

9. Energy in a Capacitor
Stored Energy:

10. Inductors in Series

11. Capacitors in Parallel

12. Inductors in Parallel

13. Capacitors in Series