4 basic principles of Magnetic fields Flashcards
1
Q
1) Current
A
Current flowing through a conductor causes a magnetic field
2
Q
2) Varying magnetic field
A
A varying magnetic field induces a voltage in a conductor (transformer action)
3
Q
3) Current-carrying conductor
A
A current carrying conductor experiences a force in a magnetic field (motor action)
4
Q
4) moving Conductor
A
A moving conductor in a magnetic field causes a voltage in the conductor (generator action)
5
Q
5) Magnetic circuit:
A
One or more closed paths that contain magnetic flux (phi)
6
Q
6) Path
A
Path consists mostly of materials with (mu)r»_space; 1, but may contain a few narrow air gaps or other materials
7
Q
7) Flux
A
Flux is confined to circuit
