Self inductance

A magnetic field generated by an electrical current in a coil interacts with itself and creates what is known as a "back emf".

Questions on mutual inductance appear in the 2330-202, 2330-203, 2330-301 and the 2357-309 exams.

Example showing back emf

Note

Information provided should be checked for validity before it is used or quoted. Electrical Exams bear no responsibility for the use of any of this material, it is used solely at your own risk.

What exam?

Are you unsure about the exam that you need for your studies? Then this guide should help...read more

Where would self inductance be used?

Within a standard fluorescent light fitting, we commonly use what is knows as a "choke" or "ballast" to limit the current flow to the lamp. In effect, it is self inductance that achieves this.

Follow us on Twitter

All information © Electrical Exams 2013 | Privacy Policy | Sitemap | Website based on a CSS file located here