E&m Flashcards
1
Q
Elementary charge (e-) in coulombs
A
1.6 x 10^-19
2
Q
F(E) =
A
K |Q||q|/r^2
3
Q
K =
A
9 x 10^9
4
Q
Work eqn using electric potential
A
W=(charge)(change in potential) = change in PE
5
Q
Capacitance ________ when plates are closer together
A
Increases
6
Q
Capacitance ________ when plate area is smaller
A
Decreases
7
Q
Charge stored in a capacitor eqn
A
Q= CV
8
Q
Potential energy in a capacitor
A
(1/2)QV^2 = .5 C V^2 = Q^2/(2C)
Area under Q vs V graph
9
Q
Electric field for planes of charge capacitors
A
E = V/d
10
Q
Dielectric impact on capacitance
A
Cā= kC
