physics Flashcards
what are conductors
materials that allow electric current to go through them freely
what are insulators
materials that don’t allow electric current flow
list 5 egs of conductors
silver
gold
copper
steel
aluminium
list 5 egs of insulators
plastic
glass
rubber
oil
diamond
what is electricity
provides energy we use in our daily lives
list 5 ways to prevent electric energy accidents
never climb trees near power lines
never fly a kite near a power line
never overload outlets
never place any electronics near water
unplug unused appliances
what is a circuit
a closed part through which an electric current flows
what is the direction of the conventional current flow
positive terminal energy source to negative terminal
what is the direction of an electron flow
negative terminal energy source to positive terminal energy source
what does the basic circuit components include
cell, switch,wire
what does cells supply
electrical energy can be combined to form batteries
what is current measured in ?
amperes with an ammeter
what are the 2 electrical circuits divided into
series and parallel
what is a series circuit
connects end to end one after the other to form a single loop
what is a parallel circuit
one that splits into 2 or more branches
