
Principles of Analog Electronics
44
aformentioned denition of electric voltage, the electric energy can be generally
dened as potential energy that is assumed by electrical charges (equivalent to
points, regions, or bodies) having a electric potential (voltage) different from that
of a point of reference that we conventionally consider as potential zero. As a con-
sequence, this is the energy made available by the ow of electric charge through
a material.
In physics, average power
is the rate at which energy is transferred, used, or
transformed. So, in terms of rate at which work is performed, it is written as
P
W
=
and instantaneous power