Magnetic Flux Density
Equations
-
\[F=BIl\]
-
\[F=BIl\sin\theta\]
- \(\(F=BIln\)\)
Where: - \(F\) is force in newtons
- \(B\) is magnetic flux density in tesla
- \(I\) is current in amperes
- \(l\) is length in metres
- \(n\) is the number of coils if a wire is coiled inside a magnetic field
Magnetic Flux Density Units
\(\(T=\frac{N}{Am}\)\)
one tesla = one newton per amp per metre
Flemings Left Hand Rule
- The First finger points in the direction of the uniform magnetic Field.
- The seCond finger points in the direction of the conventional Current
- The thuMb points in the direction of the force (the direction of Motion).
Torque
\[\tau=BIAn\cos(\alpha)\]