CBSE Class 10 Answered
what is rheostat?
Asked by Chanchal.sharma252 | 22 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 | 22 Jul, 2014, 06:00: PM
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