From the course: Electronics Foundations: Basic Circuits
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Capacitors vs. inductors
From the course: Electronics Foundations: Basic Circuits
Capacitors vs. inductors
- [Instructor] Since capacitors and inductors are both reactive components that store energy and oppose change, there are times when a circuit can be designed to use one or the other to do the same thing. However, capacitors and inductors are not direct replacements for each other because they work in very different ways. For starters, the way that capacitors and inductors store their energy is different. Capacitors store energy in the electric field that exists between two charged plates. Inductors, on the other hand, store energy in the magnetic field surrounding a coil of wire. In regards to how capacitors and inductors react to change, capacitors resist sudden changes in voltage by absorbing and releasing stored charge, attempting to maintain a constant voltage across the capacitor. Inductors resist change in current by expanding and collapsing the magnetic field in the coils. And they attempt to maintain a constant…
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