If the voltage varies the charge varies and there
is a displacement current
Capacitance Law
One can also express the voltage across
in terms of the current
Integral form of Capacitance law
… Or one can express the current through
in terms of the voltage across
Differential form of Capacitance law
The mathematical
implication of the integral
form is ...
Voltage across a capacitor
MUST be continuous
Implications of differential form??
DC or steady state behavior
A capacitor in steady state acts as an
OPEN CIRCUIT
