Physics P.5 Flashcards
Conductors
They conduct electricity very well. Let electrons pass through them
Insulators
Electrons don’t pass through because there’s is no delocalized electron i.e plastic
Semi-Conductors
They conduct electricity when heated
Potential Difference
Higher the voltage the higher the electrons are pushed/more energy given to push electrons
SI Unit of Potential Difference
Volts/V
1V? (volt)
1J/C (joule)
What is maximum Potential Difference called?
Electromotive force (EMF)
Current Si unit
AMPS
Energy Si unit
Joule
Charge SI Units
Coulombs
Q=5c
T=0.2ms
I=?
T=0.2ms=0.2x10^-3
Q=IT
5=Ix0.2x10^-3
5/10^-3=I
I=25000A
Formula to find Q(Charge)?
Q= IxT
Where is conversion current from?
It’s from negative to positive
Where is convention current from?
It’s from positive to negative
Where is the electron flow from?
Negative to positive
