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Second Right Hand Rule
Rule that gives the direction of the magnetic field about a current-carrying wire
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Solenoid
A long, helical coil of wires
Terms
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 =  (cosθ1 - cosθ2) |
| Formula for the magnetic field strength inside an infinite solenoid | B =  |
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