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Oersted's Apparatus
Oersted's Apparatus (Product Code: SLE/PHY/263) is a pivoted magnetic needle inside a current-carrying frame, used to show the action of an electric current on a magnet in school electromagnetism lessons. Physics teachers use it to repeat Oersted’s classic observation: its 75mm cobalt steel needle turns on an agate bearing within a 130 x 50mm rectangular frame fitted with 4mm socket terminals. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Needle | Cobalt steel, 75mm long |
| Bearing | Agate bearing, supported by a pivot |
| Base | Plastic, carrying the pivot |
| Frame | Rectangular, 130 x 50mm, in the vertical plane, surrounding the needle |
| Terminals | Two 4mm socket terminals at one end of the frame and one at the other |
| Purpose | To show the action of an electric current on a magnet |
| Product code | SLE/PHY/263 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is Oersted's Apparatus Used For?
Set the apparatus so the frame lies north–south with the needle resting along it. When a current is passed through the frame, the needle swings away from that direction; reverse the current and it swings the other way; switch off and it settles back. This shows directly that a current-carrying conductor produces a magnetic field, and it gives a practical way to test direction rules such as the right-hand grip rule. It is a core piece of any electromagnetic kit for schools in India.
Use a low-voltage DC supply with a switch in the circuit, and pass the current only for short periods so the frame does not heat up. Keep bar magnets and steel objects away from the bench while observing, and lift the apparatus rather than sliding it, as the needle sits on a delicate agate bearing.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of Oersted’s Apparatus. The apparatus is made and assembled at the company’s own licensed factory at Saha, Ambala, Haryana, India, and supplied direct to schools, colleges, institutions, dealers and importers without a trading middleman.
Repeat orders and questions about replacement parts are answered by the manufacturer itself, so ask us whenever you need them. The ScienceLab profile has more about the company.
Related Physics Lab Equipment
Items used alongside this apparatus in magnetic-effect-of-current lessons:
- Power Supply, Smoothed — a DC source for the frame current
- Knife Switch – Single Pole — to switch the current on only briefly
- Plotting Compass, Single Glass Face — to trace the field around a current-carrying wire
- Ampere’s Rule Apparatus — another demonstration of the magnetic effect of current
- Oersted’s Law Apparatus — an alternative design listed with electricity equipment
Browse more in Physics Lab Equipment.
Frequently Asked Questions
What does Oersted's Apparatus demonstrate?
Oersted’s Apparatus demonstrates the action of an electric current on a magnet. When current flows through its rectangular frame, the pivoted needle inside is deflected, proving that an electric current produces a magnetic field around the conductor.
What is the needle in Oersted's Apparatus made of?
The needle in Oersted’s Apparatus is cobalt steel, 75mm long, and turns on an agate bearing supported by a pivot. Agate is hard and smooth, so the needle swings freely and responds to a small magnetic effect from the frame current.
How is Oersted's Apparatus connected?
Oersted’s Apparatus connects through 4mm socket terminals on its 130 x 50mm frame, two at one end and one at the other. Wire it to a low-voltage DC supply through a switch, and pass current only briefly while students watch the needle.
Why should the frame of Oersted's Apparatus point north–south?
Aligning the frame of Oersted’s Apparatus north–south means the needle rests along the frame before the current is switched on. The field from the current then acts across the needle, producing a clear, easily seen deflection.
Who manufactures Oersted's Apparatus?
Oersted’s Apparatus is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory in Saha, Ambala, Haryana, India. It is supplied directly by the manufacturer to buyers in India and international markets.
What information does a quotation for Oersted's Apparatus need?
A quotation for Oersted’s Apparatus needs the product code SLE/PHY/263, the number of units, whether you also want a power supply, switch or compasses, and where the goods should be delivered. Use the contact page or the enquiry cart.
Request a Quote
Get a manufacturer-direct price for Oersted’s Apparatus by listing your quantity on the contact page or adding it to the enquiry cart.
Last updated: 24 September 2026
