Circuits Flashcards
1
Q
Safety issue of plug
A
Wire will melt if too much current goes through
= use a fuse
2
Q
What’s power measured in
A
Watts
3
Q
Current measurement
A
Amps
4
Q
Describe the national grid
A
- power stations generate electricity
- transfer energy to step up transformer through network of cables across country
- moved to step down transformer then to houses
5
Q
Use of step up transformer
A
Turn low voltage to high voltage
= energy can move through system with less energy loss
= more efficient
6
Q
Use of step down transformer
A
High voltage to low voltage
= safe to be in homes
7
Q
Describe static electricity
A
- insulators rubbing together
- movement of electrons
- shock when charge gets reset
