The inverse of capacitance is called

reluctance
conductance
susceptance
elastance

The inverse of capacitance is called elastance. It is a measure of the opposition of a capacitor to a change in voltage. It is measured in inverse farads (F-1).

  • Reluctance is the opposition to the flow of magnetic flux in a magnetic circuit. It is measured in ampere-turns per weber (At/Wb).
  • Conductance is the ability of a material to conduct electricity. It is measured in siemens (S).
  • Susceptance is the opposition to the flow of alternating current in a circuit. It is measured in ohms (Ω).

Elastance is a relatively new concept in electrical engineering, and it is not as well-known as the other three concepts. However, it is an important concept to understand, as it can be used to design more efficient capacitors.