Magnetic flux (8) Flashcards
1
Q
Fleming’s left-hand rule
A
used to determine the directions of force, magnetic field and current or velocity.
2
Q
Magnetic flux ϕ
A
magnetic flux density × cross-sectional area perpendicular to field direction (measured in webers).
3
Q
Weber
A
the weber (Wb) is the unit of magnetic flux, equal to 1 tesla metre2 (1Tm2).
4
Q
Magnetic flux linkage
A
magnetic flux linked by a coil, calculated as magnetic flux ϕ × number of turns N of the coil (measured in weber-turns).
5
Q
Weber-turns
A
the unit of magnetic flux linkage.
6
Q
Faraday’s law
A
the induced e.m.f. equals the rate of change of (magnetic) flux.
7
Q
Lenz’s law
A
the direction of the induced e.m.f. causes effects that oppose the change producing it.
