Question

What is Variable resistance?​

Answer 1

Answer:

An electronic component that is used to vary the amount of current that flows through a circuit. It works by sliding a wiper terminal across a resistive material, typically a thin film or chunk of carbon or a resistive wire made of nickel chromium or tungsten alloys.

Explanation:

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Answer 2

Answer:

Variable resistor

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Description

A variable resistor is a resistor of which the electric resistance value can be adjusted. ... When only two terminals are used, it functions as a variable resistance and is called a rheostat. Electronically controlled variable resistors exist, which can be controlled electronically instead of by mechanical action.