| 1a. |
DC. Direct Current is defined by current (the movement of electrons)
all going in one direction. |
| 1b. |
Positive Voltage – in simplest conventional terms, Positive Voltage
is considered to be moving in wire left to right. The current is
viewed as being pushed from “source to ground.” |
| 1c. |
Negative Voltage - in simplest conventional terms, Negative Voltage
is considered to be moving in wire right to left. The current is
viewed as being pulled from “ground to source.”
|
| 2. |
Good analogy for DC is water being displaced in a pipe. For our
purpose, wind is a good analogy too. The particles actually move
from one place to another. |
| 3. |
AC is constantly changing direction, but essentiall staying in one
place. |
| 4. |
The best analogy here is to compare the movement of the electrons to
how sound moves through the air. The particles essentially stay in
one place, but bounce abainst each other. |
| 5a. |
DC – Electrons get displaced. |
| 5b. |
AC – Action of energy transfer uses particles but doesn't displace
them.
_________  |
| 6. |
The natural reference for AC is Ground. |
| 7. |
In AC, all forces average out at ground. Ground is also 0.0 Volts. |
| 8. |
In AC, the amount of force above and below the reference point are
always the same, by definition. |
