ESU of current to Ampere Conversion

Convert between ESU of current and Ampere quickly and accurately.

From ESU of current

ESU

To Ampere

How to Convert ESU of current to Ampere

Conversion Formula

1 ESU = 3E-10 A

1 A = 2997924536.843 ESU

Example

Convert 15 ESU to A:

15 ESU = 15 × 3E-10 A = 5E-9 A

Unit Information

Learn about the current units you're converting between

ESU of current

ESU

Definition

The ESU (Electrostatic Unit) of current is a unit in the CGS electrostatic system, equal to approximately 3.335641 × 10⁻¹⁰ amperes. It represents an extremely small current and was used in electrostatic measurements and calculations before the adoption of the SI system.

History/Origin

The ESU system was developed as part of the CGS electrostatic system in the late 19th century, providing a coherent set of units for electrostatic measurements. The ESU of current was defined to maintain consistency with other electrostatic units in the system, though it has been largely superseded by the SI ampere.

Current Use

The ESU of current is rarely used in modern practice, having been replaced by the SI ampere. It may appear in historical scientific literature or specialized contexts where CGS electrostatic units are referenced, but contemporary electrical engineering and physics use the ampere and its decimal multiples exclusively.

Multiplier

3E-10

Offset

Ampere

Definition

The Ampere (A) is the SI base unit of electric current, defined as one coulomb of electric charge passing through a conductor per second. It is fundamental in electrical engineering and physics for measuring the rate of electric charge flow in circuits, essential for analyzing electrical systems and designing electronic devices.

History/Origin

Named after André-Marie Ampère, a French physicist and mathematician who made significant contributions to electromagnetism in the early 19th century. The ampere was officially adopted as the SI base unit for electric current in 1948, replacing earlier definitions based on electrochemical processes and providing a more precise and reproducible standard.

Current Use

The ampere is universally used in electrical engineering, electronics, and physics to measure current flow in circuits, power systems, and electronic devices. It is essential for circuit analysis, electrical safety calculations, power system design, and the specification of electrical components and equipment in industrial, commercial, and residential applications.

Multiplier

Offset