Engineering Handbook/ElectroMagnetic

Electric Magnet
Any current conducting conductor has:
 * 1) Magnetic poles: The north pole corresponds to positive polarity and the south pole corresponds to negative polarity
 * 2) A magnetic field consisting of field lines running from north pole to south pole

Magnetic Field
1) For a straight line conductor connects to Positive voltage . The Magnetic Field consists of Circular Field Lines counter-clockwise

2) For a straight line conductor connects to negative voltage . The Magnetic Field consists of Circular Field Lines clockwise

3) For a Coil constructed from straight wire with several turns . The Magnetic Field consists of elliptical Field Lines that has

Electromagnetism
For a Coil constructed from straight wire with several turns. Then
 * Magnetic Field Strength
 * B = L I


 * Magnetic Flux on the turns
 * $$\phi = N B$$


 * Magnetic Force.
 * F = B l


 * Voltage Induced on the Coil.
 * $$v = L \frac{dI}{dt}$$


 * Voltage Induced on the Turns.
 * - epsilon = $$ N \frac{d \phi}{dt}$$