Download 16.3 Notes

Circuits (16.3) Notes
What are
An electric circuit is a ________________ through which charges can be conducted. In other words there is a
Circuits?
__________________-loop path for electrons to follow. This conducting path is called a _________________
_________________. Without a complete path, there is no charge flow and therefore no current. This is called an
______________ ________________.
____________________ are used to open and close circuits.
A diagram that depicts the construction of an electrical circuit or apparatus is called a ____________________
____________________.
Complete the chart below by drawing the symbols for each electrical component:
SCHEMATIC DIAGRAM SYMBOLS
Component
Wire or other
conductor
Resistor
Bulb or lamp
Battery or
other voltage
source
Open Switch
Closed
switch
Schematic
Symbol
When appliances or other devices are connected in a __________________ circuit, they form a single pathway
Series and
for charges or current to flow.
Parallel
Circuits
Because there is only one ______________for a charge to follow when connected in series, the current in each
device in the circuit is the ____________________. The ______________________ may be different; therefore,
the voltage across each device in a series can also be different.
Series:
Sketch a series circuit here: 
Parallel circuits have _________________ paths for current.
When devices are connected in __________________, the voltage across each device is the ______________.
The __________________ in each device does not have to be the same. Instead the sum of all the devices equals
the ____________ current. A _________________ in any one path in a parallel circuit does not interrupt the flow
of electric charge in the other paths.
Parallel:
Sketch a parallel circuit here: 
Electric
Electrical energy is the energy produced as a result of ____________________ particles because of their
Power and
positions.
Electrical
Energy
When an electrical charge moves, work is done. The rate at which electrical work is done is called electrical
________________. It is the product of total current in (I) and voltage (V) across the circuit.
P = IV
Power companies charge for _______________ used in homes, not power. The unit these companies use to track
usage is the _________________-______________.
Fuses and
Too many appliances or short circuits can cause the the overall _____________________ of a circuit to be
Circuit
lowered. This allows wires to carry an unsafe amount of current. High curretns in ______________________
Breakers
circuits can cause ______________.
To prevent overloading circuits, _____________ are sonnected in series along a supply path. If current becomes
too large, the fuse will ______________ and the circuit will open.
Circuit breakers act as a ____________________ that opens when current becomes too large.