ELECTRICITY AND MAGNETISM

Induced electromagnetic force (emf): Conductor in a Magnetic Field: E = B*l*v

E - Induced emf; B - flux density of the magnetic field; l - length of conductor; v - velocity of conductor across magnetic field

Induced electromagnetic force (emf): Coil in a Magnetic Field: E = -N (ΔΦ / Δt)

N - number of turns; E - induced emf

ΔΦ / Δt - the change in flux linkage in a given interval of time

Instantaneous Voltage: e = E_max sin θ

e - instantaneous voltage;; E_max - maximum voltage

θ - angle between the plane of the conducting loop and the perpendicular to the magnetic flux (displacement angle)

Instantaneous Current: i = l_max sin θ

i - instantaneous current; l_max - maximum current; θ - displacement angle