Your Half-Ass. Motor
AC versus DC
The amount of Magnetic Field that passes thru a Surface
Click to see demo 1, 2, 3
The induced emf resulting from a
changing magnetic flux
has a polarity that leads to
an induced current whose direction
is such that the induced magnetic field
opposes the original flux.
Lenz's Law 1, 2, 3
|An Inductive Circuit|
When the switch is thrown, the current will induce a magnetic field in the coil that will initially oppose the the current. Once the current reaches it's maximum value the induced magnetic field in the coil will cease to exist. Why?
The L-R Circuit
|The transformer provides us a way to change the voltage or curent between circuits using electromagnetic induction.|