Electrical Systems - Chp 9 Flashcards
(9 cards)
1
Q
Voltage is the force that causes ____ to flow through a conductor.
A
Current
2
Q
Current is measured in ____.
A
Amperes
3
Q
The opposition to the flow of current in an AC circuit is called ____.
A
Impedance
4
Q
Power is measured in ____.
A
Watts
5
Q
The relationship between voltage, current, and resistance is defined by the formula ____.
A
I = V/R
6
Q
A current is always seeking to return to the ____.
A
Source
7
Q
The main panel distributes power using ____.
A
Feeders and distribution panels
8
Q
At what point in the AC power system are the branch circuits that power wall outlets and AV equipment connected?
A
Subsidiary distribution panel (panelboard)
9
Q
When planning an electrical system, do not plan to exceed ____ of the current capacity of any circuit.
A
80 percent
