Energy, Power and Paying for Electricity Flashcards
1
Q
How does an electric current transfer energy?
A
Energy is transferred when charge moves:
from a chemical store of a battery
from a chemical/nuclear store of fuel in power station
2
Q
What does the power rating of an appliance mean?
A
rate of transfer of energy by an appliance between stores
3
Q
What is a high power rating?
A
Appliance transfers more energy per second when used
Battery goes flat faster, fuel used up more quickly
