Just like when we want to squeeze inductance spring spring, spring will give us a rebound strength, hollow coil that is elastic in the hollow coil spring to prevent our spring austerity. In fact, the induced electromotive force of rebound like spring, when trying to change the current in the coil, the induced electromotive force will obstruct it, try to let the current can be maintained in a relatively balanced situation.
So if we go after the spring tightening, after releasing the hand, spring will return to its original shape. Is the inductance of the hollow coil the same? The answer is yes.
A large inductor current energy storage characteristic curve can store energy and the inductance of the hollow coil, when the inductor current is too high, in order to maintain the current balance of inductance, will be part of the energy storage, when the current back to the initial condition, the inductance will release some energy. As part of the energy storage spring, spring is not a return to the original shape, it will be through the repeated sensation, until the potential energy release completely until after the return to the initial shape.
Another characteristic of mutual inductance inductance is mutual inductance. The current of one loop produces a magnetic field, the hollow coil, and the magnetic field will affect the second loop. This interaction is called mutual inductance. The most typical use of mutual inductance is the transformer, which is what we often see in our daily life.
