# Magnetic Breaks Essay

473 WordsMar 22, 20152 Pages
Michael Faraday KAML ROMODAN | ID: 11/7 | February 23, 2015 KAML ROMODAN | ID: 11/7 | February 23, 2015 Magnet Operated Brake mini-Project proposal Magnet Operated Brake mini-Project proposal Heinrich Lenz Objective The main objective of this project is to introduce a much simpler and more effective way of brake. Which operates by Faraday’s and Heinrich Lenz’s law of electromagnetic circuits which will be discussed later on. This kind of brakes can be installed on two wheelers and four wheelers like cars and heavy ones like coal trains. How does this work? This brake operation can be best explained by the help of Faraday’s law which states any change in the magnetic environment of a conductor of wire will cause a voltage (emf) to be "induced" in the conductor. No matter how the change is produced, the voltage will be generated. The change could be produced by changing the magnetic field strength, moving a magnet toward or away from the conductor, moving the conductor into or out of the magnetic field, rotating the conductor relative to the magnet. As the voltage is induced on the conductor creates an eddy current. Eddy currents (also called Foucault currents) are circular electric currents induced within conductors by a changing magnetic field in the conductor. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. And we know that every electrical currents produce their own a magnetic fields, and Lenz’s law of electromagnetic describes the direction of the magnetic fields produced its stated as “If an induced current flows, its direction is always such that it will oppose the change which produced it.” Lenz's law is a common way of understanding how electromagnetic circuits obey Newton's third law and the conservation of energy. There for the conductor will be magnetized with a different