Electrostatics
Stationary
Electroscope = indicates charge
Conversions:
μ = micro = x 10-6
n = nano = x 10-9
p = pico = x 10-12
Electric charge (Q or q)
Measured in coulomb (C)
Quantization of charge
Q = N x qe
1.6 x 10-19
(+ for p+)
(- for e-)
Positive integer
(no fractions)
e.g. How many e- were removed from a sphere with a net charge of +6nC?
-6 x 10-9 = N x (-1.6 x 10-19)
N = 3.75 x 1010 e-
Conservation of charge
=the net charge of an isolated system will always remain constant
e.g. +6μC -10μC
-4μC
-2μC -2μC
Stationary
Electroscope = indicates charge
Conversions:
μ = micro = x 10-6
n = nano = x 10-9
p = pico = x 10-12
Electric charge (Q or q)
Measured in coulomb (C)
Quantization of charge
Q = N x qe
1.6 x 10-19
(+ for p+)
(- for e-)
Positive integer
(no fractions)
e.g. How many e- were removed from a sphere with a net charge of +6nC?
-6 x 10-9 = N x (-1.6 x 10-19)
N = 3.75 x 1010 e-
Conservation of charge
=the net charge of an isolated system will always remain constant
e.g. +6μC -10μC
-4μC
-2μC -2μC
