Basic Electrical Theory
METHODS OF PRODUCING VOLTAGE (ELECTRICITY)
METHODS OF PRODUCING VOLTAGE (ELECTRICITY)
This section provides information on the following methods of producing
electricity:
Electrochemistry
Static (friction)
Induction (magnetism)
Piezoelectric (pressure)
Thermal (heat)
Light
Thermionic emission
EO 1.5
DESCRIBE how the following methods produce a voltage:
a.
Electrochemistry
b.
Static electricity
c.
Magnetic induction
d.
Piezoelectric effect
e.
Thermoelectricity
f.
Photoelectric effect
g.
Thermionic emission
Electrochemistry
Chemicals can be combined with certain metals to cause a chemical reaction that will transfer
electrons to produce electrical energy. This process works on the electrochemistry principle.
One example of this principle is the voltaic chemical cell, shown in Figure 11. A chemical
reaction produces and maintains opposite charges on two dissimilar metals that serve as the
positive and negative terminals. The metals are in contact with an electrolyte solution.
Connecting together more than one of these cells will produce a battery.
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