# Electrostatics

and Electricity

Reference - Forumla Sheet

## ⚠ Students equipped with sensitive medical equipment such as pace makers or insulin pumps or students with a family/self-history of heart-related illnesses are to be cautious around and avoid large voltages

Activities

Charging Lab 1 - Determining whether charges affect different objects

Charging Lab 2 - Discovering how amount and type of charge affect different objects

Fun Fly Stick - a hand-held Van de Graaff generator

Polarity Shift - Pong with charges simulator

Wimshurst Machine - Generates and holds charges in Leyden Jars

Topics

Charge Types - Positive & Negative

Charging via Conduction, Friction, and Induction

Grounding

Electric Field Lines

Coulomb's Law

## Students are Expected to Understand

The Behavior and Interactions Between Charges

How to Read and Interpret Field Line Diagrams

Applications for Electrostatic Charges

### Some Notes on Electrostatics

• This unit focuses primarily on concepts and very little Math will be involved. Having said that, this unit tends to be a greater challenge than previous topics to many students
• In many cases, you will not be able to directly see the static charges, but instead their observable effects
• Only negative charges, electrons, can move. Positive charges, protons, stay in place.
• A ground is a path or place that can accept or donate a large number of electrons, typically the Earth itself. A ground can be used to turn something neutral OR charge something depending on its use
• Like the gravitational field, the strength of the electrostatic field is reduced significantly over small distances. This is because it also follows the inverse square law for forces over distance