ELEC1103 Lecture Notes - Lecture 15: Electric Field, Inductor, Short Circuit

• School: University of Sydney
• Department: Electrical Engineering
• Course: ELEC1103
• Professor: omid kavehei

Document Summary

In dc, inductors are a short circuit since a magnetic field is only generated by a changingelectric field. Power through an inductor p = li di dt. A positive slope of the energy curve indicates that energy is being stored in the inductor. Series and parallel combinations of inductance and capacitance. We assume that the inductors all have the same current flowing through them. Therefore, we can express the voltage drop across each as di di v1 = l1. From this it follows that dt , v2 = l2 dt , v3 = l3 dt di. Leq = l1 + l2 + l3 + + ln. If the original inductors carried some initial current i(t)the equivalent inductor carries the. Since capacitors store energy in an electric field by producing a voltage difference between 2 places, the voltage they had across themselves when they were reduced must also be considered. The charges across capacitors in series are the same.