Electrodynamics

• Magnetic Flux Linkage


  the product of the number of turns on the coil and the flux through the coil.
• Faraday’s Law of electromagnetic induction 


  the emf induced is directly proportional to the rate of change of magnetic flux (flux linkage)
• Lenz’s law 


  the induced current flows in a direction so as to set up a magnetic field to oppose the change in magnetic flux
• Diode


  a component that only allows current to flow in one direction.