Need To Know Flashcards
1
Q
What is Internal Energy
A
Sum of Kinetic Energy and Potential Energy of all particles in a substance
2
Q
What energy if temp increasing
A
Kinetic Energy
3
Q
What energy if temp stays constant
A
Potential Energy
4
Q
Live wire
A
Brown wire - carries potential difference from power supply (230V)
5
Q
Neutral wire
A
Green - provides low resistance path to ground
6
Q
Earth Wire
A
Green - completes circuit carries current away from circuit
7
Q
What is a step up transformer
A
increases voltage decreases current increase PD
8
Q
What is a step down trasnformer
A
decreases voltage, increases current, decreases PD (230V for homes)
9
Q
A
10
Q
Diff between parallel and series circuits
A
Parallel circuits - components in seperate loops
Series circuits - all components connected in line with eachother
