# Define One Henry

Learn about the significance of the Henry, a unit of inductance in electronics, and its applications in various circuits and devices.

## What is a Henry?

When it comes to understanding electricity and electronics, the unit of measure known as the Henry plays a crucial role. A Henry is a unit of inductance in the International System of Units (SI), named after American scientist Joseph Henry. In this article, we will delve into what exactly a Henry is, how it is calculated, and its significance in various applications.

## How is a Henry Calculated?

One Henry is defined as the inductance of a circuit in which an electromotive force of one volt is produced when the electric current in the circuit changes at a rate of one ampere per second. Mathematically, a Henry is equal to one volt-second per ampere.

## Significance of a Henry

The Henry is a fundamental unit in the field of electronics and plays a vital role in the design and analysis of circuits. Inductors, which are electronic components that store energy in a magnetic field when a current passes through them, are measured in Henrys. Understanding the inductance of a circuit is crucial for determining its behavior and performance.

## Applications of the Henry

Inductors are widely used in various electronic devices and systems. Some common applications of inductors measured in Henrys include:

• Power supplies
• Electric motors
• Transformers