Electromagnetic Induction

This is a revolutionary invention that runs our economy, basis of Motors.

A changing magnetic field creates current. See Lenz’s Law and Faraday’s Law.

${\mathcal{E}}_{ind}=I_{ind}R$

Induced Voltage

Be careful of the signs of induced voltage. I think in this case, current flows from ”-” to ”+” because that is actually how the electrons work.