electricity - potential difference Flashcards
(8 cards)
what does 1 volt of potential difference tell us
that 1 joule of energy is transferred for each coulomb of charge that is moving through the circuit
how do we measure potential difference
using a voltmeter
what does potential difference tell us
it tells us how energy is transferred in an electrical circuit
what happens to the total energy in a series circuit if there are two components
the total energy carried by the current has been shared between the two lamps
what happens to the potential difference across the two lamps
it is the same as across the cell
for components connected in ________ circuits, the _________ difference across each component is the ____
for components connected in parallel circuits, the potential difference across each component is the same
what is a battery
two or more cells connected together
when making a battery, the cells have to be pointing the same way, why?
if they are different the potential difference become 0v
