Energy & change
Force
Introduction
What is force? 5'05"
Effects of force
Effects of force 3'15"
Types of force
Types of force 6'29"
Magnetic field and force 5'52"
Gravity 3'11"
Basics
Requirements for current to flow
Components and diagrams
Batteries and bulbs
Terms 6'12"
Cells and brightness 6'35
Cells in series 7'55"
Cells in parallel 8'43"
Variables and their measurement
Factors affecting resistance
Series
Adding resistors in series
Terms 3'77"
Investigation 9'06"
Position and current strength
Position and current strength 6'37"
Current strength at various positions in a series circuits 5'30"
Resistance and current strength
Terms 4'56"
Basic investigation 12'06"
Extended investigation 9'34"
Potential difference and current strength
Basic investigation 11'46"
Extended investigation 13'18"
Potential difference across components in series circuits
Single circuit 13'15"
Circuits with same R ratios 14'53"
Worked examples
Parallel
Parallel circuits
Current strength in the main part of a parallel circuit 6'19"
Potential difference and current strength in parallel circuits 7'18"
Bulb brightness
Adding resistors in parallel 17'07"
Current strength
Voltage
Worked examples
Generation & distribution of electricity
Energy sources
Cells & batteries
How does a battery work? 4'06"
How batteries work 4'19"
Make a lemon battery 1'47"
Power stations
Energy generation 5'18"
Hydroelectric power 3'12"
Wind power 1'46"
Tidal power 2'14"
Solar power 1'00"
Biomass power 3'38"
Nuclear power 5'17"
National grid
Electricity distribution 3'00"
Safety with electricity
Safety tips 4'27"
Electrical safety animation 10'16"
How to wire a plug 6'07"
Paying for electricity
Introduction 7'17"
Concepts 11'03"
Calculations 11'02"