What ia rheostat.

1.	What ia rheostat.
Answer» \tRheostat is an electric device used as a variable resistance, like\xa0the regulator of the fan.\tIt is used to change the electric resistance in the electric circuit.\tUsually Rheostat consists\xa0of a coil of wire with a terminal at one end and a sliding contact that moves along the coil to tap off the current.\tWe can change the resistance by changing the position of contact of the sliding contact that moves along the coil to tap off the current.

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