Faraday's Law of Induction

Maxwell's Equations

MU: Induction

WebHW

Notes

Chapters

Home

Mechanical Universe

Viewing Information

Electromagnetic Induction:

After Oersted's 1820 discovery that electric currents create magnetism, it was obvious that in some way magnetism should be able to create electric currents. The discovery of electromagnetic induction, in 1831, by Michael Faraday and Joseph Henry was one of the most important of the 19th century, not only scientifically, but also technologically, because it is the means by which nearly all electric power is generated today.

Learning Objectives

• Be able to state Faraday's law and use it to find the emf induced by a changing magnetic flux.
• Be able to state Lenz's law and use it to find the direction of the induced current in various applications of Faraday's law.
• Be able to state the definitions of self inductance and mutual inductance.
•  
• Be able to state the expression for the energy stored in a magnetic field and the magnetic energy density.
• Be able to apply Kirchhoff's laws to obtain the differential equation for an LR circuit and be able to discuss the behavior of the solution.