In textbook terms, what is conductance?

Conductance is defined as the ease with which a material allows the flow of electric current. This concept is fundamental in electrical engineering and physics, where it relates to how well a material permits electricity to move through it. Essentially, conductance is the reciprocal of resistance; a material with high conductance has low resistance, meaning it readily allows current to pass.

When discussing conductance, it is important to interpret it in terms of its units, typically siemens (S), which indicate how effective a material is at conducting electricity. High conductance values suggest that the material can effectively transfer electrical energy, making it crucial in applications involving electrical circuits and components.

Understanding conductance as a measure of ease rather than as a fixed quantity allows for a nuanced approach to analyzing materials in various electrical applications. This is why the definition aligns most accurately with option C, as it captures the essence of how conductance operates in relation to electric current.