The Magnetic Field Principles

Ampere’s (circuital) Law

Faraday's Law

Basic of Transformer

  • Voltage will be induced when a magnet passing through a coil of wire, which directly proportional to change of time

Electromagnetic Force (Lorentz force)

Basic of electromagnet

H = N * i / lc


B = μ H
where μ = μ0 μr


Φ = B * A


F = Φ * R


P = 1 / R

  • When electric current flow, magnetic field will be produced around the conductor.

Second Newton’s Law for Rotation

V (Emf) =(v * B) • I

Basic of Motor

F = i l Bsinθ

  • Force will be induced on a current carrying wire which surround by magnetic field

  • Voltage induced in conductor when it move through the magnetic field