Electricity Flashcards
1
Q
What is the equation for current?
A
I = Q/t (in seconds) = (charge / time in seconds)
There are other equations which come from rearrangements.
2
Q
What is the equation/s for voltage?
A
V=IR (current x resistance)
V=E/Q (energy / charge)
There are other equations which come from rearrangements.
3
Q
What is voltage measured in?
A
Volts
4
Q
What does EMF stand for?
A
Electromotive force
5
Q
What is the equation relating current, emf resistance?
A
ε=I(r+R)
6
Q
What is the equation relating volts lost to voltage and emf?
A
v= ε-V
7
Q
What is the equation relating lost volts, internal resistance and current?
A
v=Ir
