Do you remember the concept of how a simple circuit
You know that if you connect a plus pole (+) and a minus pole (-) of a
battery with a conductor, electrons flow in the same direction. This
is called direct current, or DC.
If the difference between the - and the + poles of a
battery is small, the electrons will not flow with much force.
However, if a lot of batteries are hooked together, the difference between
the - and the + becomes great. The electrons will then flow with
greater force. The force that makes electrons
flow is called voltage. The unit of electrical force or push is
called the volt. The more volts, the greater the difference between
the - and + poles becomes. The result is a greater push of electrons
through the conductor. A regular flashlight battery has a voltage of
about 1.5 volts.
Direct current, or DC does not produce the electricity
used to run refrigerators, washing machines and televisions. A
different kind of electricity is required for this. It is called
alternating current or AC because the direction of flow of the electrons
keeps alternating back and forth. This flow change occurs 60 times
Alternating current is produced in electric power plants
by huge electric generators. The generator changes mechanical energy
to electrical energy. The electricity travels from a power plant to
distance places. The electricity is sent by wires at high voltage.
Directions: Answer the questions about direct
current and alternating current.
current is produced if you connect a plus pole (+) and a
minus pole (-) of a battery with a conductor.
is produced in an electric power plant.
The flow change of alternating current occurs 60 times
The force that makes electrons
flow is called
The unit of electrical force or push is
A generator changes mechanical energy
Indicate if each of the following uses direct current or
alternating current. Use DC or AC to answer.
remote control for TV
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