what is rheostat?

Asked by Chanchal.sharma252 | 22nd Jul, 2014, 05:42: PM

Expert Answer:

A rheostat is a variable resistor or an adjustable resistor.Its resistance can be varied as desired.It is a continuous resistance varying device used to change the magnitude of current in a circuit by changing the length of the resistance wire inserted into the circuit.The main use of a rheostat is as variable resistance .

Answered by Jyothi Nair | 22nd Jul, 2014, 06:00: PM

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