P7.2.2 - Energy Analysis - Electric Current Flashcards
1
Q
What does an electric appliance do?
A
Transfer energy electrically from chemical stores
2
Q
Why will your phone’s battery drain more if the screen is on?
A
The screen being on requires more power
3
Q
Why is energy always transferred to a thermal store when current is passing through a wire?
A
The current heats up the wire
4
Q
What does a DVD player require electricity from?
A
Mains
