c18 electric charge and c19 electric fields

law of conservation of charge

states that total amount of electric charge stays constant in an isolated system over time

electric field

region around charged particle or object which exerts force on other charged particles or objects

electric charge

physical property of matter causing charged matter to experience a force when placed in an electromagnetic field

conductor

substance that allows electricity to flow

insulator

substance that electricity cannot flow through

electrostatics

branch of physics that studies electric charges at rest the forces they exert on each other and their behaviour in electric fields

static electricity

build up of electric charge on an object typically by friction

induction charging

method to charge object without necessarily touching object to another charged object

coloumbs law

states that electric force between 2 charged objects is directly proportional to product of charge on objects and inversely proportional to square of distance between them

electric field strength (E)

force per unit charge acting on small positive test charge placed on that point