Rheostat - device which changes electrical resistance.

Water tap regulates the water flow. If the water tap is fully opened then the water flow is big, but if the water tap is opened a little bit then the water flow is small.

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Rheostat Reitings: 0 Skatījumi: 870 +

Autors: Kristiāna Heislere (Riga English grammar school) Klase: 12