Embedded Files
Vocabulary
Vocabulary
Generator - A device that makes electricity
Galvanometer - an instrument used to determine the presence, direction, and strength of an electric current in a conductor.
voltmeter - measures the potential difference (voltage) between two points.
In 1832, Michale Faraday discovered what we called electromagnetic induction.
Electromagnetic induction - the creation of an electro-motive force (EMF) by way of a moving magnetic field around an electric conductor, and conversely, the creation of current by moving an electric conductor through a static magnetic field.
Using an iron ring, two coils of wire, and a compass, he found that changes in a magnetic field could induce (generate) an electric current in an adjacent circuit.
All galvanometers are based on the fact that a magnetic needle is deflected by the presence of an electric current in a nearby conductor. In general, the deflection of the needle is dependent on the strength of the current — the stronger the current, the greater the movement of the needle.
Using the information he gathered from his experiments, Faraday was able to create the first electric generator.
Generating Electricity
Generating Electricity
A generator is only one device that produces electricity. This video shows us how it can be generated.
As was said in the video, it is not the heat source the generates the electricity but the spinning magnets and the coil in the generator that converts the mechanical energy into electric energy.
Draw and label the generator in your notes.
Check your Understanding
Check your Understanding
Describe how a simple generator produces electric energy.
List two things you can do to increase the amount of electric energy produced by a generator.
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