The impedance Z of a solenoid with a conducting piece near it when capacity effects are neglected is Z = R + jωL with (1) R=Re−NωφosinϕIo (2) L=NωφocosϕIo where Re is the resistance of the wire of the coil, N is the number of single turns of the coil, Φo is the amplitude of the mean magnetic flux crossing the coil, Io is the amplitude of the current I circulating in the coil, ω is the pulsation of the current and ϕ is the phase of the flux relative to the current.
展开▼
机译：当忽略电容效应时，带有导电片的螺线管的阻抗Z为Z = R +jωL，其中（1）R = Re-NωφosinϕIo（2）L = NωφocosϕIo其中Re是线圈导线的电阻， N是线圈的单匝数，Φo是穿过线圈的平均磁通量的振幅，Io是在线圈中循环的电流I的振幅，ω是电流的脉动，ϕ是相位相对于电流的通量。
展开▼
