static electricity

Law of electric forces

A charged object exerts an electric force

Attractive force = pulling together

Repulsive force = pushing apart

Strength of force is related to amount of charge on objects and distance

Static electricity

Buildup of electric charge on the surface of an object because of an imbalance between positive and negative charges

Induction

Shift in position of electrons in a neutral object when a charged object is brought close to it.

Permanent induction

Objects are permanently charged by induction by grounding the object

Good conductor

Any material that allows electrons to move easily through it

Examples of good conductors

Silver , copper , gold

Fair conductors

Allows elections to move through but not as easily as good conductor

Examples of fair conductors

Graphite , earth , salt water

Insulator

Material that doesn’t allow electrons to move through. The electrons are tightly bound to atom so they cannot move

Examples of insulator

Oil, silk, paper

Conduction

When 2 objects with different amounts of charge come in contact with each other. Electrons move from one object to another.

Grounding

Removing excess charge by transferring electrons from an object to a large neutral object

Electric discharge

2 objects with charge imbalance come in contact electrons move. This can be seen as sparks.