# Opposite of a variable resistor is there such a thing as a variable conductor? Answered

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It isn't the opposite ! You can define a unit called conductance, which is 1/resistance. It has the SI unit of the Siemen. 1000 Ohms is 1mOhm, 100 Ohms is 0.01 Siemens, 1 Ohm is 1 Siemen.

If you want to imagine a potentiometer calibrated in Siemens instead, you have a variable conductance.

No.

If there was, it would do the same thing as a variable resistor.

Variable resistors can change their resistance based on the position of a dial or a slide. Variable conductors (theoretically, according to what you are asking) would change their conductivity based on the position of a dial or a slide. Both are basically the same. To reduce conductivity, increase resistance, and vice versa.

If you want a "variable conductor", just get a variable resistor with a really small max. resistance.

Well a resistor is also considered a variable conductor, since the conduction of it varies inversely with the resistance.

But some transistor is a variable conductor.  The more voltage applied to it, the more it conducts.

Simply put, but there is more to it than that.