What is varistor?

What is varistor? Correct Answer a voltage dependent resistor

1. Varistor is used for controlling voltage fluctuation within a limit of few volt.

2. Variable resistors, such as the potentiometer and the rheostat, have ohmic characteristics.

3. It has a nonlinear, non-ohmic current-voltage characteristic that is similar to that of a diode. 

4. VDR stands for Voltage Depended Resistor and also called varistors.

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