---
id: 2026-04-14T15:50:06-0400
title: 2026-04-14 15:50:06
tags:
  - status/draft
date-created: 2026-04-14T15:50:06-04:00
daily: "[[2026-04-14]]"
---
# 2026-04-14 15:50:06

## Conductance

**Conductance** is the reciprocal of [resistance](https://en.wikipedia.org/wiki/Electrical_resistance).

The SI unit of conductance ($G$)
is the [siemens](https://en.wikipedia.org/wiki/Siemens_(unit)) (S).
"Mho" (ohm backwards) is an unofficial name and should be avoided.

Like the ohm is also the unit of [reactance](https://en.wikipedia.org/wiki/Electrical_reactance) ($X$)
and [impedance](https://en.wikipedia.org/wiki/Electrical_impedance) ($Z$),
the siemens is also the unit of [susceptance](https://en.wikipedia.org/wiki/Electrical_susceptance) ($B$)
and [admittance](https://en.wikipedia.org/wiki/Admittance) ($Y$),
their respective reciprocals.

***

For my purposes,
conductance is generally a far more practical quantity than resistance,
owing to that it increases with wire area and cost like ampacity.

> [!info] Ohm's Law In Terms of Conductance
>
> $$
> V = \frac{I}{G}, \quad G = \frac{I}{V}, \quad I = G \times V
> $$
