Sources of Magnetic Fields
Terms and Formulae
Terms
Second Right Hand Rule
-
Rule that gives the direction of the magnetic field about a current-carrying
wire
Solenoid
-
A long, helical coil of wires
Formulae
| Formula for the magnetic field around a straight wire |
B = 
|
| Equation for the force, per unit charge, between two parallel current carrying wires |
 = 
|
| Formula for the contribution by a small length of wire, dl , to the magnetic field at a given point |
dB = 
|
| Equation for the strength of the magnetic field on the axis of a ring |
B = 
|
| Equation for the strength of the magnetic field at the center of a ring |
B = 
|
| Formula for the magnetic field strength on the axis of a solenoid |
B =  (cosθ
1 - cosθ
2)
|
| Formula for the magnetic field strength inside an infinite solenoid |
B = 
|
