static electricity

static electricity

the build up of electric charge ont eh surface of an object to due to an imbalance fo positive and negative charges

conduction

the transfer of electric charge between objects when they are in direct contact with each other

induction

charging a neutral object by bringing a charged object near it without any direct contact

static discharge

the sudden flow of excess electrons from one charged object to another

conductors

materials that allow electrons to easily move through it such as metals like gold and silver

insulators

materials which do not allow any electrons to flow through it such as rubber, plastic, glass

grounding

creating a path for electrons to safely flow into the Earth

charging by friction

when two objects are rubbed together electrons will transfer between the 2

why do we put insulation around wires

since the human body is a conductor and we don’t want to get electric shock when we touch wires, so we put an coating of an insulator like rubber to prevent electrons from entering our body

Pure water Insulator or Conductor

Insulator

Salt water/ tap water/ water containing other minerals Insulator or Conductor

Conductor as the minerals in this water can carry a current and increase the conductivity of the water

. How would you charge the electroscopes above permanently by induction?

Use your finger to ground it and when a negative rod is put next to it use your finger to allow the repelled electrons to the ground so that your electroscope is now positive and when a positive rod is placed next to the electroscope use your finger or wire to allow electrons to flow back in so that the electroscope can be negative