Faraday`s Law of Induction

Faraday`sLaw of Induction

MichaelFaraday discovered the law of induction in 1831 out of hisexperiments with the magnets (Krey and Anthony 153). That law ofelectromagnetic induction states that an electric current produces amagnetic field while a change in the magnetic field produces anelectric current through a conductor. Faraday conducted severalexperiments to come up with a reliable conclusion that was widelyrejected by most scientists since the discovery did not have amathematical fact (Newman 453). However, the theory would later beadopted and used in various modern ways to produce electromagneticcurrent. The paper will discuss the history of Faraday`s law ofinduction and its importance to the society in the contemporarysociety.

Thefirst experiment that Faraday did on electromagnetic induction was on29th August 1831 where he wrapped two wires on the opposite sides ofan iron ring (Krey and Anthony 153). He had a basic knowledge of themagnet and knew that a magnet has two poles which are the North Poleand the South Pole (Newman 453). Having studied the properties ofmagnets, he presumed that he is likely to discover some magneticeffect from the wire on one end of the other wire. He introduced abattery on one end and on placing the galvanometer on the oppositeend he discovered that there was some transient current. Faradayspent significant time carrying out experiments to see the transientcurrents. He would slide a bar magnet within a wire and realized thecurrent caused by the magnetic flux (Krey and Anthony 153). He alsogenerated steady current when he rotated a copper disc near a magnetcontaining a sliding electrical current.

Beforethe discovery by Michael Faraday, the world had not known of the useof transient current. As a result, there was no use of electricmotors. Therefore, things like transformers were not applied as therewas no guiding principle that could lead to the utilization ofelectromagnetic current. As a result, there was not application oftransient current to power industries and machines at the time. Tosolve these problems, Faraday carried out many experiments to affirmhis discoveries and put the solution into writing. All theseexperiments were geared towards proving that his discovery wasscientific and that the theory was a fact. However, his developmentcame at a moment when scientific facts had to be supported by amathematical fact. Therefore, it was highly rejected, and only oneindividual by the name Maxwell sought to put Faraday`s discovery intoa precise point, though with variance in the original concept (Chow171).

Thediscovery by Michael Faraday changed the society by opening the useof electromagnetic current. The electromagnetic induction was adoptedwidely in the production of the electromagnetic current. It iscurrently used in transformers, inductors, electrical motors,solenoids as well as the generators. It is employed in the generationof the electric current. The transformers transfer the electriccurrent from one circuit to another by magnetic coupling and in somecases step up the current as well as stepping it down. The generatorsalso change the chemical energy to the electric energy and in somecases it is concurrent with other sources of electricity where theyfunction as a substitute. The electric automobiles also use theelectromagnetic induction in the generation of power.

Faraday`slaw of induction further led to the understanding of the propertiesof the magnets, which translated to the use of transient current.Faraday’s invention further improved the works of other scientists.Clerk Maxwell`s equations of the theory supported Faraday`s theoryand enhanced the application of the concept (Chow 171). The fact waslater adopted in producing the electromagnetic current used in thetransformers, electric motors, generators, solenoids as well as theinductors. What started as a mere discovery later became part of thecontemporary world.


Newman,Jay. Physicsof the Life Sciences.New York: Springer, 2008. Print

Krey,Uwe, and Anthony Owen. BasicTheoretical Physics: A Concise Overview. Berlin:Springer, 2009. Print

Chow,Tai L. AnIntroduction to Electromagnetic Theory: A Modern Perspective. Boston:Jones and Bartlett, 2008. Print