By Topic

A Visual Demonstration of the Electric Field of a Coil Carrying a Time-Varying Current

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)

The nature of the electromagnetic fields of a helically wound coil carrying a time-varying current is examined. It is shown how simple applications of Faraday's and Ampere's laws yield the dominant field components. It is pointed out that within the coil, both magnetic and electric fields are predominantly axial and uniform. The axial electric fi'eld is many times greater than the radially dependent circumferential electric field usually associated with the time-varying axial magnetic field within the coil. A method is described that uses heat-sensitive cholesteric liquid crystals and resistive paper to provide a visual display in color of the electric field of the coil.

Published in:

Education, IEEE Transactions on  (Volume:24 ,  Issue: 4 )