Week 1 Term 3 2021

 Homework

Act 13A, p.205-206 Level 2 D.C. Circuit Revision

Act 13B, p.210-211 Internal Resistance of a Battery

Act 13C, p.214-216 Kirchhoff's Laws

Act 14A, p.224 Capacitors

Capacitor

C = Q/V

Capacitors

Basic Definition

Physical Parameters

Energy Stored

Ep = ½ QV

Capacitors & Capacitance

Capacitors Explained

Dielectric

An insulating material placed in between the capacitor plates to increase the Capacitance

C = 𝜺r𝜺oA/d

Dielectrics in Capacitors

PhET Capacitor Lab Basics - App

Capacitor Circuits

Capacitors in Series

Calculating Voltage Charge and Total Capacitance

Capacitors in Parallel

Calculating Voltage Charge and Total Capacitance

Capacitors in Parallel vs Capacitors in Series

Capacitors in Combination

Series & Parallel Capacitors

Capacitors in Combination

Patrallel & Series Capacitors

Capacitors in Series

Calculating Voltage Drop

Capacitors in Series

Calculating the Charge Stored

Capacitors in Series

Calculating the Equivalent Capacitance

Capacitors in Parallel

Calculating Voltage Drop

Capacitors in Parallel

Calculating the Charge Stored

Capacitors in Parallel

Calculating the Equivalent Capacitance

Capacitor Charge & Discharge

RC Circuits 1: Charging and Discharging a Capacitor

Week 10 Term 2 2021

 Homework

Act 13A, p.205-206 Level 2 D.C. Circuit Revision

Act 13B, p.210-211 Internal Resistance of a Battery

Act 13C, p.214-216 Kirchhoff's Laws

Electrical Charge

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

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

V = ΔE/Q

Ohm's Law & Resistance

Power

Circuit Symbols

Ohm's Law

Ohm's Law - PhET App

D.C. Circuit Construction Kit - PhET App

Ohm's Law

Internal Resistance of a Battery

Batteries can be thought of as having an ideal voltage supply E.M.F. (Electromotive Force) in series with an internal resistance

V = 𝛆 - Ir

How to find the internal resistance of a battery

Kichhoff's Laws

Kirchhoff’s Current Law
“At any junction in a circuit, the total current entering the junction equals the total current leaving the junction”
Kirchhoff’s Voltage Law
“Around any closed path of a circuit, the total of all the potential differences, V, is zero”

Kirchhoff's Rules for Circuit Analysis - Explanation

Kirchhoff's Rules for Circuit Analysis - Example 1

Kirchhoff's Rules for Circuit Analysis - Example 2

Kirchhoff's Rules for Circuit Analysis - Example 3