...
The electrical energy that can actually cause injury is due
to electrical current and how it flows through the body. Why,
then,
does the sign warn of high voltage? Because of the way
electrical ... under-
standing of electrical engineering.
Before we can examine this aspect of electrical safety, we
have to learn how voltages and currents are produced and the
relationship between them....
... the voltage level is not the sole
RSPECWE
determinant of potential injury due to electrical
shock, consider the case of a static electricity shock
mentioned in the Practical Perspective at ... Perspective
Electrical Safety
At the beginning of this chapter, we said that current through the body can
cause injury. Let's examine this aspect of electrical safety.
You might think that...
... /j and i
2
, we begin by
testing the initial and final values of i
L
and i
2
. We
know by hypothesis that /^(0) = i
2
(0) = 0. From
the given solutions we have
/j(0) = 4 + 64 - 68 = 0,
4;
...
After introducing the techniques for analyzing the natural and step
responses of first-order circuits, we discuss some special cases of interest.
The first is that of sequential switching, ... that
is,
we have a natural-response problem.
RL and RC circuits are also known as first-order circuits,
because their voltages and currents are described by first-order
differential equation...
... e'
2!/T
\
t > 0. (7.18)
The time constant is an important parameter for first-order
circuits,
so
mentioning several of its characteristics is worthwhile. First, it is conven-
ient