Term 3 Week 8 2017

Homework:

• Ex 6E, p. 222-224, F = Bqv
• Ex 6D, p. 218-219, F = BIL & F = BILsin(θ)
• Ex 6F, p. 227-228, V = BvL

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

Electromagnetic Induction
Levitating Barbeque

Term 3 Week 7 2017

Homework:

• Ex 6C, p.205-214, Series & Parallel Electric Circuits - V = IR
• Ex 6E, p. 283-284, F = Bqv
• Ex 6D, p. 218-219, F = BIL & F = BILsin(θ)

Tournament Week

Revision week and catch up for students not away on sports tournament

Term 3 Week 6 2017

Homework:

• Ex 6C, p.205-214, Series & Parallel Electric Circuits - V = IR
• Ex 6E, p. 283-284, F = Bqv
• Ex 6D, p. 218-219, F = BIL & F = BILsin(θ)

Magnetic Fields

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)

Term 3 Week 5 2017

Homework:

• Ex 6C, p.205-214, Series & Parallel Electric Circuits - V = IR

Resistors in Series - Calculating Voltage, Current & Resistance

Resistors in Series

Resistors in Parallel - Calculating Voltage, Current & Resistance

Resistors In Parallel

Resistors in Series vs Parallel

Resistors in Combination - Series & Parallel Resistors - Part 1

Resistors in Combination - Series & Parallel Resistors - Part 2

Resistors in Series - Calculating Equivalent Resistance

Resistors in Series - Calculating Current

Resistors in Series - Calculating Voltage

Resistors in Parallel - Calculating Voltage

Resistors in Parallel - Calculating Current

Resistors in Parallel - Calculating Equivalent Resistance

Term 3 Week 4 2017

Homework:

• Ex 6A, p.188-196, Electric Fields
• Ex 6B, p.200-201, Current & Voltage
• Ex 6C, p.205-214, Series & Parallel Electric Circuits - V = IR

Current

Current is the rate of flow of Charge

I = Δq/Δt

Current

Voltage

Voltage (Potential Difference) is the change in energy (work done) to each coulomb of charge between two points on a circuit, or two points across an electric field

Circuit Symbols

Ohm's Law

Ohm's Law PhET application

Ohm's Law

Series & Parallel Circuits

Series & Parallel Circuits

Electric Power

P = IV

P = I2R  ← using Ohm’s Law V=IR substitution

P = V2/R←using Ohm’s Law I=V/R substitution

Term 3 Week 3 2017

Homework:

• Ex 6A, p.188-196, Electric Fields

Cathode Ray Tube - Electron Gun

Cathode Ray Tube - Electron Gun

Discovery of the Electron: Cathode Ray Tube Experiment

Cathode Rays Lead to Thomson's Model of the Atom

Millikan's Oil Drop Experiment

Charge of an Electron - Millikan's Oil Drop Experiment

Term 3 Week 2 2017

Homework:

• Ex 3A, p.47-52, Refraction
• Ex 6A, p.188-196, Electric Fields

PhET application on Charge & Electric Fields

Basics of Electric Charge

Definition of an Electric Field:

“Any region of space where a charge feels a force.”

A positive charge will feel a force with the electric field direction

A negative charge will feel a force against the electric field direction

Fe = Eq

Electric Field

Electric Fields

Electric Potential (Voltage)

Uniform Electric Field

E = V/d