Flashcards in 2.7 Deck (8):
what is energy used for in our home?
for heating and to power electrical appliances
what is power
the rate at which the energy is transferred in an electrical appliance
what do energy labels help consumers do?
work out which appliances are most efficient and cost-effective
what is energy measured in?
1 watt = how many joules per second?
power (watts) =
potential difference (volts) X current (amps)
different electrical appliances in the home
power (kw) (w) = energy transferred (kw/h) (j) divided by time (h)(s)