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Inductors as Circuit Elements. Inductors oppose variations in the current through a circuit. -In DC-circuit, L helps to maintain a steady current (despite fluctuations in applied emf). In AC circuit, L helps to suppress fast variations in current.
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.
4.3 The Electric Displacement 181 4.3.1 Gauss’s Law in the Presence of Dielectrics 181 4.3.2 A Deceptive Parallel 184 4.3.3 Boundary Conditions 185 4.4 Linear Dielectrics 185 4.4.1 Susceptibility, Permittivity, Dielectric Constant 185 4.4.2 Boundary Value Problems with Linear Dielectrics 192 4.4.3 Energy in Dielectric Systems 197
Physically, the inductance L is a measure of an inductor’s “resistance” to the change of current; the larger the value of L, the lower the rate of change of current. Example 11.2 Self-Inductance of a Solenoid Compute the self-inductance of a solenoid withN turns, length l, and radius R with a
Modeling: Any physical device that involves a coil of wire can be modeled using inductance. An obvious example is a motor, whose windings have an inductance. More generally, a device with a current-induced magnetic field that interacts like an inductor will have inductance. 6.2 The Capacitor Circuit symbol
This edition covers all aspects of basic theory with no assumption of prior electrical knowledge. The author also limits math to basic algebra and trigonometry with step-by-step examples. Quality schematics and illustrations guide students through basic electrical circuits; DC and AC theory; and equipment such as meters, transformers and motors.
This resource includes the following topics: mutual inductance, self-inductance, energy stored in magnetic fields, RL circuits, LC oscillations, The RLC series circuit, summary, appendix 1: general solutions for the RLC series circuit, appendix 2: stresses transmitted by magnetic fields, problem-solving strategies, solved problems, conceptual ...
