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Magnetising and Demagnetising Coil
Magnetising and Demagnetising Coil (Product Code: SLE/PHY/239) is a base-mounted solenoid used to magnetise and demagnetise ordinary magnets, iron bars and strips in school physics magnetism lessons. It is wound with insulated copper wire, works at low voltage, and comes complete with a switch and 4 mm socket terminals for connection to a laboratory supply. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, for electromagnetism practicals.
Key Details
| Parameter | Detail |
|---|---|
| Type | Solenoid mounted on a base |
| Winding | Insulated copper wire |
| Control | Switch fitted |
| Connections | 4 mm socket terminals |
| Operating voltage | Low voltage (confirm the exact supply with us) |
| Suitable for | Magnetising and demagnetising ordinary magnets, iron bars, strips and similar items |
| Product code | SLE/PHY/239 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is the Magnetising and Demagnetising Coil Used For?
When current flows through a solenoid, it produces a strong magnetic field along its centre. Placing an iron or steel bar inside the coil and switching on briefly lines up the tiny magnetic regions in the metal, so the bar comes out magnetised; students can then check its poles with a compass needle or see how many pins it lifts. Science departments also use the coil to restore bar magnets that have weakened over years of classroom use.
Demagnetising is generally done by exposing the item to a field that is steadily reduced, often an alternating one, as the bar is slowly withdrawn. Use only a low-voltage laboratory supply, keep current-on periods short so the winding does not warm up, and use the right-hand grip rule to predict which end becomes the north pole. As a laboratory instruments supplier in India, we can advise on a suitable power source.
What to Specify When Ordering
- The low-voltage supply you have (AC or DC, and voltage), so we can confirm it suits the coil.
- The size of the magnets or bars you want to treat, so we can check they fit the coil.
- The number of coils needed for your lab.
Supplier
ScienceLab, the trading name of Jain Scientific Equipments Private Limited in Ambala, Haryana, supplies the Magnetising and Demagnetising Coil to schools, colleges, polytechnics and dealers in India and international markets. We can quote it together with a low-voltage power supply, magnets and compass needles so a department receives a working magnetism set. Company information is on the ScienceLab profile page.
Related Physics Lab Equipment
Items used with the coil in magnetism practicals:
- Power Supply, Stepped — a low-voltage AC/DC laboratory supply.
- Magnetic Needle, Brass — for checking the poles of a newly magnetised bar.
- Magnet Set — magnets and iron filings for comparing strength before and after treatment.
- Iron-Clad Electromagnet — another demonstration of magnetism produced by current.
See more in Physics Lab Equipment.
Frequently Asked Questions
What can the Magnetising and Demagnetising Coil be used on?
The Magnetising and Demagnetising Coil is suitable for magnetising and demagnetising ordinary magnets, iron bars, strips and similar items. It is intended for school and college laboratories that need to prepare or restore magnets for experiments.
What power supply does the Magnetising and Demagnetising Coil need?
The Magnetising and Demagnetising Coil is a low-voltage coil connected through 4 mm socket terminals and switched by its own switch. The exact voltage and whether AC or DC should be used are not stated here, so please confirm them with us through the contact page.
How is a bar magnetised with the Magnetising and Demagnetising Coil?
To magnetise a bar with the Magnetising and Demagnetising Coil, place the bar inside the solenoid, switch the current on briefly, then switch off and remove the bar. Test its poles with a compass needle; the right-hand grip rule predicts which end becomes north.
How does demagnetising work with the Magnetising and Demagnetising Coil?
Demagnetising generally relies on a magnetic field that is gradually reduced, often an alternating field while the item is slowly withdrawn. Ask us how the Magnetising and Demagnetising Coil should be connected for demagnetising, so you use the correct supply for your model.
Who supplies the Magnetising and Demagnetising Coil?
Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, supplies the Magnetising and Demagnetising Coil to schools, colleges and dealers in India and international markets, and can quote it with power supplies and magnetism apparatus.
What should a quotation request for the Magnetising and Demagnetising Coil include?
A quotation request for the Magnetising and Demagnetising Coil should include the quantity, the power supply you plan to use and your delivery location. Send it through the contact page or the enquiry cart and we will reply with price and availability.
Request a Quote
To buy the Magnetising and Demagnetising Coil (SLE/PHY/239), contact us via the ScienceLab contact page or add it to the enquiry cart with any power supply or magnets you need.
Last updated: 24 September 2026
