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Magnetic Energy Density. -The energy in an inductor is stored in the magnetic field within the coil, just as the energy of a capacitor is stored in the electric field between its plates. Ex: toroidal solenoid (B confined to a finite region of space within its core). V = (2πr) A.
2 Φεβ 2023 · Inductance is a property of a conducting wire wound in the shape of a coil that opposes any change in the current flowing through it. According to Faraday’s law of electromagnetic induction, changing current induces an emf (electromotive force) in the coil.
Inductance is the property of a device that tells how effectively it induces an emf in another device. Mutual inductance is the effect of two devices in inducing emfs in each other.
What happens when the current is turned up? “Self-Inductance” - A circuit carrying current I generates its own magnetic field B; so there will be a flux Φ through. B. the circuit. - if I changes, an emf E is induced in the same circuit. (“self-inductance”) - Lenz’s Law: E tends to oppose the change in I.
Modeling: Any physical device that involves a coil of wire can be modeled using inductance. An An obvious example is a motor, whose windings have an inductance.
Inductance is the characteristic of an electrical conductor that OPPOSES CHANGE in CURRENT. The symbol for inductance is L and the basic unit of inductance is the HENRY (H). One henry is equal to the inductance required to induce one volt in an inductor by a change of current of one ampere per second.
Inductance. Goals for Chapter 30. To learn how current in one coil can induce an emf in another unconnected coil. To know the inductance. To relate the induced emf to the rate of change of the current. To calculate the energy stored in a magnetic field. To analyze circuits containing resistors and inductors (R-L circuit)
