Electricity Physics Flashcards
1
Q
Potential energy in a uniform electric field
A
-qEd
2
Q
PE in a non uniform field
A
Kq1q2
_____
R
3
Q
Uniform potential difference
Delta V=
A
-Ed
4
Q
Non uniform potential difference
A
R
5
Q
Capacitance=
A
q
___
V
6
Q
Parallel plate capacitors
C=
A
E(symbol thing)A
________
D
7
Q
E(Symbol thing)=
A
8.85e-12
8
Q
Potential energy stored in a capacitor
A
PE=1/2CV=1/2QV=Q^2/2C
9
Q
Current(Amps)
I=
A
Q
___
T
10
Q
Ohms law
V=
A
IR
11
Q
Power(watts)
p=
A
IV=I^2R=V^2/R
12
Q
$cost=
A
Kw(hours)
