Electromagnetic Induction. A changing magnetic field generates a current. Faraday’s Induction Law. Emf electromotive force Induced emf ( ε ) voltage Induced emf is proportional to the area of the loop penetrated perpendicularly by the field.
ε measured in V
Each coil in a wire will experience an induced emf, so as you add coils…(N is number o’ coils)
ε = -N (ΔΦ/Δt)
One of the fundamental eqns of electromagnetism. Not really derived from prev formulas, more from observation.
FM = qvB sinϴ = qvB
That force does work on the charge, acting parallel to the wires length (L)
ε = vBL