electricity - static electricity and electric fields Flashcards
metals are ______ conductors of electricity
good
why can’t elections conduct electricity
they are insulators meaning the electrons can’t move through them
what is cloth
an insulator
what happens if I rub a cloth and a tube of plastic which are both insulators
electrons will move from the plastic onto the cloth resulting in a loss/gain of electrons
what is this known as
static electricity
what is found in a generator
a moving belt meaning electrons pass from the plastic rod onto the belt and get moved to the bottom rod
why is there a dome found over the top of the generator
it acts as a store of electrical charge meaning if you were to touch it you would have an overall positive charge
what happens if electrostatic charge builds up as the fuel flows through the refueling pipe
an explosion could occur
how can this be reduced
both the fueling truck an aeroplane are earthed to prevent the charge building up and causing a spark
what happens to objects carrying opposite charge
they attract
what happens to objects carrying the same charge
they repel
attraction and repel are what type of force
non contact forces
how to scientists show an electrical field
using field lines
what do the arrow show
the force of attraction for a positive source
what happens if we decrease the distance of the objects
the force gets stronger
