Ampere Law Apparatus
Product Code : SCL-PLE-11644
Quick Answer: The Ampere Law Apparatus has a heavy brass conductor through a non-magnetic base, ringed by one large and four small compasses, so that when a low-voltage DC current flows the needles line up in a circle around the wire.
Last updated: 18 October 2026
Key Features
- Heavy-gauge brass wire/rod conductor.
- One large master compass and four small satellite compasses.
- Compasses set in a circle around the conductor.
- Non-magnetic polymer or wooden base.
- Runs on low-voltage DC from a battery or eliminator.
Technical Specifications
| Specification | Value |
|---|---|
| Conductor | Heavy-gauge brass wire/rod |
| Compasses | 1 large master, 4 small satellite |
| Layout | Compasses in a circle around the conductor |
| Base | Non-magnetic polymer or treated wood |
| Power | Low-voltage DC (battery or eliminator) |
How It Is Used
With no current the compass needles all point the same way. When DC is switched on, they swing round to lie along a circle about the conductor, and reversing the current reverses them. This shows the right-hand grip rule and the circular field described by Ampère's law.
Frequently Asked Questions
What powers the Ampere Law Apparatus?
A low-voltage DC supply, either a battery or a battery eliminator, connected across the brass conductor.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related magnetic effect of current apparatus:
- Magnetic Field Along Straight Conductor
- Oersted's Law Apparatus
- Magnetic Field Along Circular Loop
- Magnetic Effect of Current
- Battery Eliminator 2-12V 2A
JLab India accepts export orders for the Ampere Law Apparatus from Tunisia, Oman, Equatorial Guinea, Liberia and Uzbekistan.
For a quotation on the Ampere Law Apparatus, contact JLab India on +91-8569909696.
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