Inductance in Physics

An inductor is a capacitor's opposite in every way that matters. It stores energy in a magnetic field, it resists a change in current, and it does so precisely because the current it carries is what creates the field trying to hold that current steady. Switch the supply on and the current climbs gradually rather than jumping, which is why the graph looks like the charging curve of a capacitor read off the other axis. The blocks give the definition of inductance, the two switching behaviours, the energy it stores, the mutual effect between neighbouring coils, and finally the LC circuit, where the coil and the capacitor pass energy back and forth and the result is a pure, gentle oscillation.