Flexible Coil and Magnet

DCS Code: 5K10.20 Last Updated: March 27, 2026
Log in to reserve this demo

Purpose

A flexible coil between magnet poles produces voltage pulses visible on an oscilloscope through three methods: waving (translation), rotating, and compressing/extending the coil. Students see that any change in magnetic flux induces an EMF, regardless of the mechanism.

Hand holding a flexible coil between the poles of a large C-shaped permanent magnet on a wooden base, connected via BNC cable to an Agilent oscilloscope displaying induced voltage pulses
Figure 1: The flexible coil held between permanent magnet poles, with induced voltage pulses displayed on the oscilloscope in roll mode.