INTO THE GRID A Study of the Power Grid THE BIG PICTURE The power grid is a very simple thing. It consists of a set of large power plants ( hydropower plants , nuclear power plants , etc.) all connected together by wires. One grid can be as big as half of the United States.
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There must be an electric potential difference across the two ends of the circuit. This is can be established by the use of a battery or generator,
Current is charge transfer per unit time
CURRENT = CHARGE/TIMECURRENT
The standard metric unit for current is the ampere
1 ampere = 1 coulomb / 1 second
the type of electricity commonly used in homes and businesses throughout the world. the current alternates in direction, back-and-forth between 50 and 60 times per second. AC is created by an AC electric generatorALTERNATING AND DIRECT CURRENT
DIRECT CURRENT (DC)
the continuous movement of electrons from an area of negative (-) charges to an area of positive (+) charges through a conducting material such as a metal wire..
Such a circuit consists of a source of electrical energy (such as a battery) and a conducting wire running from the positive end of the source to the negative terminal.
Power is measured in a unit known as the watt
P = IV
P = power in watts
I = current in amperes
V = voltage in voltsPOWER