Electric loudspeaker

The electric speaker diaphragm vibrates force is magnetic force of the current carrying conductor , we call this effect the electric force effect transducer , the size specified by the following formula :
F = B L i
Where : B is the magnetic flux density in the gap (intensity ) , in units of N / (Am) < N / ( ampere meters ) > also known as Tesla (T)
L is the length of the coil wire , the unit: m
i is the current flowing through the coil unit: Ampere
F is the magnetic force on the Computer Speaker voice coil units : Newton
However , the force in the movement of the voice coil is energized , while the magnetic gap due to the magnetic field will cut line so as to generate an induced electromotive force in the voice coil , we call this effect electric transducer electrical effects , the size of the Wooden Computer Speaker induced electromotive force :
е = Вiν
Where : v is the voice coil vibration velocity in units of : m / s
е electromotive force induced in the coil , the unit is : V
Electrodynamic loudspeaker force effect and electrical effects are simultaneously present, accompanied by the line .