Week 3 Term 3 2024 Magnetic Fields

 Homework:

Electric Fields

• Act 17A, p.192-194, Electric Fields

• Ex 6A, p.188-196, Static Electric Fields

DC Electric Circuits

• Act 18A, p.201 Intro DC Electricity

• Act 18B, p.207 Simpler Equivalent Circuits

• Act 18C, p.209 Potential Dividers

• Act 18D, p.211-213 Using Ohm's Law

• Ex 6B, p.200-201 Voltage and Current

• Ex 6C, p.205-214 D.C. Circuits

Magnetic Fields

• Act 19A, p.219-220 Magnets

• Act 19B, p.223-225 F = BIL Lorentz

• Act 19C, p.228 F = Bqv Lorentz

• Ex 6D, p.218-220 F = BIL Lorentz

• Ex 6E, p.222-224 F = Bqv Lorentz

• Ex 6F, p.227-228 V = BvL Induced EMF

• Act 20A, p.231-232 Induction

• Act 20B, p.235-237 V = BvL Induction

Magnetic Fields






Magnets 

Electromagnet

Earth & Compasses - Magnetism





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



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