Contents
How do you dissipate current?
Power Rule: P = I × V If a current I flows through through a given element in your circuit, losing voltage V in the process, then the power dissipated by that circuit element is the product of that current and voltage: P = I × V.
What is trapped energy of an inductor?
1. This energy is actually stored in the magnetic field generated by the current flowing through the inductor. In a pure inductor, the energy is stored without loss, and is returned to the rest of the circuit when the current through the inductor is ramped down, and its associated magnetic field collapses.
Is it possible to calculate the inductance of an inductor?
It is possible to calculate L for an inductor given its geometry (size and shape) and knowing the magnetic field that it produces. This is difficult in most cases, because of the complexity of the field created. So in this text the inductance L is usually a given quantity.
Is there such thing as mutual inductance in physics?
The answer is yes, and that physical quantity is called inductance. Mutual inductance is the effect of Faraday’s law of induction for one device upon another, such as the primary coil in transmitting energy to the secondary in a transformer. See Figure 1, where simple coils induce emfs in one another.
How is energy stored in an inductor circuit?
The current flowing through the inductor generates the magnetic field where the energy is actually stored. In a pure inductor, the energy is stored without loss and is returned to the rest of the circuit when the current through the inductor is ramped down and its associated magnetic field collapses.
Why does an inductor have no power loss?
The equation below shows the instantaneous power used in forcing the current against this self-induced emf. An ideal inductor has zero power loss because it has no resistance—only inductance—and therefore no power is dissipated within the coil.