Oersted's Law Apparatus
Product Code : SCL-PLE-11583
Quick Answer: The Oersted’s Law Apparatus is a ready-to-use demonstration unit in which a rectangular conductive frame surrounds a cobalt steel magnetic needle on an agate bearing. When current from a power source flows through the frame, the needle deflects, showing that an electric current produces a magnetic field.
Last updated: 18 October 2026
Key Features
- Rectangular conductive frame built around a pivoted magnetic needle.
- Cobalt steel needle on an agate bearing, pivot-mounted so it turns freely.
- Built-in jacks/terminals for connecting the power source.
- Plastic base; supplied assembled and ready to use.
Technical Specifications
| Specification | Value |
|---|---|
| Base | Plastic |
| Conductor | Rectangular conductive frame surrounding the needle |
| Needle | Cobalt steel |
| Bearing | Agate, on a pivot mounting |
| Connections | Built-in jacks/terminals for a power source |
| Supplied | Pre-assembled, ready to use |
How It Is Used
Students connect a power source to the terminals and watch the needle inside the frame swing aside as soon as current flows, then settle back when the circuit is broken. The apparatus reproduces Ørsted's observation that a current-carrying conductor deflects a nearby magnetic needle.
Frequently Asked Questions
What makes the needle of the Oersted’s Law Apparatus move?
The current in the rectangular conductive frame around it. Current from a power source connected to the built-in terminals sets up a magnetic field that deflects the pivoted cobalt steel needle.
What is the needle of the Oersted’s Law Apparatus made of?
Cobalt steel. It sits on an agate bearing with a pivot mounting so it can turn freely inside the frame.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related magnetic effect of current apparatus:
- Magnetic Field Along Straight Conductor
- Magnetic Effect of Current
- Ampere Law Apparatus
- Magnetic Field Along Circular Loop
- Plotting Compass, Single Glass Face
The Oersted's Law Apparatus is available for export to schools and laboratories in Montenegro, Namibia, Iran, United States, Cameroon and Eritrea.
For a quotation on the Oersted's Law Apparatus, contact JLab India on +91-8569909696.
