Term 3 Week 8 2021

  Homework:

• Act 19A, p.219-220 Magnets
• Act 19B, p.223-225 Magnetic Forces
• Act 19C, p.228 Moving charges and Magnetism
• Act 20A, p.231-232 Intro to Electromagnetic Induction
• Act 20B, p.235-237 Electromagnetic Induction claculations




Magnetic Fields






Magnets 

Electromagnet

Electromagnet Used for Scrap Metal Crane



Levitating with Electromagnets


Exploding Cans with Electromagnets


Magnetic Fields




Right Hand Screw Rule





Right Hand Slap Rule



Right Hand Slap (Palm) Rule


Lorentz Force (F = Bqv)


Lorentz Force





Lorentz Force (F = BIL)










V = BvL

Note:
• emf is an old term for voltage and stands for electromotive force
• E is also used by enginers for Voltage (not energy)


D.C. Motor




D.C. Motor How it Works





Brushless D.C. Motor How it Works







Faraday Cage




Tesla Coil & Faraday Cage