AC circuit HAFONHA EAHKAJYTOCAABHJS 100 MARODHA BANKA JUGOSLAVIE 100
AC circuit
Agenda Today 1.Self-Inductance and Multi Inductance 2.Energy stored in Magnetic Field 3.RL Circuit 4.AC Circuit
Agenda Today 1. Self-Inductance and Multi Inductance 2. Energy stored in Magnetic Field 3. RL Circuit 4. AC Circuit
Self-inductance(自感系数) L=Ψ/I Unit:H According to Faraday's Law: Ψ d(LI) dI 8L= dt dt dt
Self-inductance(自感系数) L / I Unit: H According to Faraday’s Law: dt dI L dt d LI dt d L ( )
Self-inductance of ideal solenoid Cross section area A length:1 current I number of turns:N permeability:u B=μ1
Self-inductance of ideal solenoid l Cross section area : A length: l current : I number of turns: N permeability: I l N B
N2 Ψ=NBS= IS 半专4S=Wherenis画 per unit length Multi induction(互感) Emf caused by the change in current carried by another loop
IS l N NBS 2 S n V l N I L 2 2 Where n is turns per unit length Multi induction（互感） Emf caused by the change in current carried by another loop