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

$\varphi =NB$

• Magnetic Force .

F = B l

• Voltage Induced on the Coil .

$v=L\frac{dI}{dt}$

• Voltage Induced on the Turns .

- epsilon = $N\frac{d\varphi }{dt}$