Fundamentals of metrology: The ampere and electrical metrology

Online

Overview

Please note this course is only available for private cohorts. Please contact NPL Training if you would like more information on enrolling a cohort.

The ampere, or ‘amp’ for short, measures electrical current, which is a flow of electrons along a wire or ions in an electrolyte, as in batteries. Electric current allows us to power all kinds of electrical devices, from smartphones or laptops to busses or cars.

The ampere has only been in use for as long as we have had access to electricity — a small proportion of the history of measurement. The ampere definition exploits the fact that electric current is made up of a flow of billions of identical charged particles called electrons. We can create a standard ampere by using special nanoscale electric circuits that control the flow of electrons.

The Ampere and Electrical Metrology course is part of the National Physical Laboratory’s (NPL) Fundamentals of Metrology training programme. The programme is comprised of seven standalone modules, each corresponding to one of the seven SI base units. The module is delivered via a series of pre-recorded video lectures and includes a scheduled live group Q&A session with metrology experts from NPL. Please note this course is only available for private cohorts. Please contact NPL Training if you would like more information on enrolling a cohort.

This course includes the following topics:

  • The importance of electrical metrology underpinning the modern digital world.
  • The history, definition and realisation of the ampere.
  • The use of devised units, i.e. the volt and the ohm.

 

Learners who successfully complete the course will receive an NPL Certificate of Completion.

Module Prerequisites
To lay the foundations for this module, all learners are provided with access to two, half-day NPL e-learning courses: Introduction to Measurement and Metrology and Introduction to Measurement Uncertainty. Learners should complete both of these courses before starting this module.

Learning Outcomes

  • Understand basic principles of making high precision electrical measurements
  • Be able to communicate how the ampere is realised in a practical sense from its definition
  • Understand practical, high accuracy electrical metrology techniques
  • Better understand good practice in electrical metrology