Basic Electrical Engineering

When a substance can conduct better, we say that its resistance is less. When it conducts less, we say that its resistance is high. But most of the time electrical engineers don't mention resistance or a material rather they prefer to speak about conductance of a material.

Conductance is the ability of a substance or material to pass electricity. The measure of the opposite of resistance is conductance. Siemens, S is the unit of conductance. When a the resistance of a component is 1 ohm then its conductance is also 1 Siemens. When the resistance is increased to double, the  conductance is decreased to half and vice-versa.