BLI law　BLI

The simplest law to explain the principle of electric motors suited to coreless or slotless constructions.
As shown in the illustration a single turn coil or loop is placed in a magnetic field B. When current I passes, the force (denoted by F ) produced from a conductor piece AB or CD is equal to BLI.

F = BLI
Here B = Magnetic flux density (T, tesla)
I = Electric current (A, ampere)
L = Conductor length (m, meter)

This electro-mechanical principle is known as the BLI law and used to explain the principle of electric motors.