physics revision electricity

physics revision electricity

1. current

   • current is measured by an amiter
   • if the ammeter is first on a parallel circuit the parallel circuits power will be exactly half
   • the curren will be the same when it is not the first thing drawing power from a curcit
   • the derection of the current is always goeing clockwise
   • current is the flow of electrical energy in a circuit

2. voltage

   • voltage can also be called potential diferance
   • voltage acts as a force to push electricity through wirers to where they need to be
   • voltage is measured in volts with a voltmeter
   • voltmeters are always put in parallel

3. curcits

   • a battery has 2 cells in it
   • all bulbs in a parallel curcit will have the same amount of power
   • a parallel circuit can go down levles
   • a simple circuit is just one line going round until it meets the cell

4. curcits