Lecture 18: Mock Exam Info, EM Induction, Magnetic Flux, Induced EMF/Currents, Faraday and Lenz Law

00:00 Admin: Some encouragements!
01:50 Admin: Mock Exam logistics: date, zoom link, cheat sheet, etc.

18:00 *[Chapter 18] Electromagnetic Inductions*
18:25 3 key equations in this chp
20:03 "Not all equations are created equal"
20:20 Definition vs. Formula vs. Law
27:17 Quick recap of chapter 16-17
36:45 Formula for B-field inside a toroid

38:45 [18A] Motivation for EM induction
42:50 Faraday's Experiment
47:50 Some examples of EM induction
50:45 Induced emf and induced currents

53:27 [18B] Magnetic Flux
53:58 Definition of Magnetic Flux
54:13 Recap of dot product
55:20 2 formulas for dot product (geometric vs. algebraic formula)
56:22 Key takeaway with dot product
58:49 Definition of Area-Vector
01:01:06 Intuitive understanding of Magnetic Flux
01:01:40 Example 1: First look at flux

01:06:29 [18C] Faraday's Law - Magnitude of induced emf
01:07:20 3 ways to get an induced emf
01:09:18 Faraday's law with N-loops
01:12:55 First look at generators

01:14:35 [18D] Lenz's Law - Direction of induced emf
01:19:08 Examples