Ammeter is used to measure current I in an electric circuit. In case of voltmeter, no ammeter can ever be ideal, and therefore all ammeters have some small internal resistance. An ideal ammeter has a zero resistance so that circuit in which it is kept is not disturbed.
In More Simple terms an ammeter is an electronic device that detects an current .With materials listed below, you can build your own ammeter and use it to measure current produced by batteries including home batteries and generators.
Material required to make ammeter
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Magnet wire, 10 meters or more of 22 gauge or higher,
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two small disk magnets (1 cm diameter)
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thread
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a cardboard tube
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a Base, a piece of corrugated cardboard about 10 cm x 10 cm
Hot melt glue (or staples) -
Aluminum foil, two 5 cm squares
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Tacks or pushpins
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Two alligator clip leads
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Sandpaper
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AA battery
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