Suspended Coils

DCS Code: 5H50.30 Last Updated: March 27, 2026
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Safety Warnings

Purpose

Demonstrates that parallel currents attract and antiparallel currents repel, providing a direct observation of Ampère's force law. The freely suspended coils swing visibly when energized, making the magnetic interaction between current-carrying conductors tangible.

Two copper coils suspended by thin red wires from a support rod on a ring stand, connected via binding posts and red/black leads to a DC power supply reading 34.0V
Figure 1: Two coils hang freely from a support rod mounted on a heavy ring stand. A DC power supply connects through binding posts at the base. The coils swing together or apart depending on relative current direction.