physcis IV

1. Circuit
path of an electric current.
a route around which an
electrical current can flow,
beginning and ending at
the same point.

2. Current.
uniform flow of electrons through a
conductor or circuit.
Direct Current
The flow of electrons in one direction.
Alternating Current
the flow of electrons constantly reverses.

3. Circuit
basically composed of three things:
sources, loads and connectors.

4. Source
can be a current or voltage source such as
batteries and power supplies.
Loads
those that consume the energy provided
by the source such as household
appliances and bulbs.
connecting wires
connects the source and the loads .

5. Schematic diagrams of elements commonly
used in circuits Schematic