RESISTORS
A resistor is a passive element
characterized by an algebraic
relation between the voltage across
its terminals and the current
through it
A linear resistor obeys OHM’s Law
The constant, R, is called the
resistance of the component and
is measured in units of Ohm
From a dimensional point of view
Ohms is a derived unit of Volt/Amp
Conductance
If instead of expressing voltage as
a function of current one expresses
current in terms of voltage, OHM’s
law can be written
Since the equation is algebraic
the time dependence can be omitted
The unit of conductance is
Siemens
