P1.8 Electrical appliances Flashcards
1
Q
How does a clockwork radio work?
A
You turn a handle on the radio which winds up a spring in it - increasing the elastic potential energy
When the spring unwinds - energy from its elastic potential energy store is transferred to its kinetic energy
Which turns a small electric generator
2
Q
What is an electrical appliance designed for?
A
For a particular purpose and should waste as little energy as possible
3
Q
What supplies most of the energy you use at home?
A
Electricity and gas / oil supply
