Electronics/Inductors
The foundation of modern electrical engineering was the discovery by Faraday that when the magnetic flux through a loop of wire was varied, a voltage was set up in the wire. This process is called electromagnetic induction.
 A conductor wound in the form of a coil is called an inductor (or solenoid)
 An inductor has a strong magnetic field that has many uses
 Inductance opposes current change
 An inductor may have its inductance increased by:
 adding more turns
 introducing an iron core through the centre of the turns
Contents
Inductance[edit]
Inductance is the property by which it opposes the change in current through a circuit.
Magnetic of Inductance[edit]
Magnetic of Turns[edit]

 Φ = N B
Voltage of Coil's Inductance[edit]

 = ξ
Voltage of Coil's Turns[edit]
Reactance[edit]
Impedance[edit]
Phase Angle[edit]
For an inductor without resistance, the voltage and current is out of phase by 90^{o} (π/2 radians).
For an inductor with resistance, the voltage and current is out of phase by θ:

 Tan θ = = 2πf L/R_{L}
When there is a change of angle, the frequency also changes. This can be used to shift the frequency:

 f = ( 2π / Tanθ ) ( R_{L} / L )
As frequency is one over time:

 t = ( Tanθ / 2π ) (L / R_{L} )
Frequency Response[edit]
 , Shorted Circuit. I = 0
 , Opened Circuit. I ‡ 0
 , Shorted Circuit. I = V / 2 R_{L}
I  can be drawn, at certain frequency the value of current does not change with. So this circuit can be used as a high pass filter.