Electricity ...

Electricity :

• Electrically charged particles attract or repel; this is fairly simple
• This is how matter is formed and held together : atomic and molecular structure
• ‘Systems of charges’ (when many are around) exhibit more complicated behavior
• Concept of a field yields a much deeper look at the nature of this force : energy is all around

Example of use of capacitors : traffic lights, laptop power adapter

Examples: lightning (an explanation), and spikes in general

Excercise : describe a field (in 5-10 sentences). (For example, electric or gravitational.)

How do charges interact : worksheet.   ( Answers )