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Electromagnetic System
Electromagnetic System (Product Code: SLE/EAM/13) is a self-contained unit that lets students find out how the current and the number of turns affect the strength of an electromagnet. Its coil is tapped at 100, 200, 300, 400, 500 and 600 turns, and ordinary paper clips act as the weights, so a whole investigation needs little more than a low-voltage DC supply. This practical piece of physics lab equipment is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Self-contained electromagnet investigation unit |
| Coil tappings | 100, 200, 300, 400, 500 and 600 turns |
| Variables studied | Current and number of turns |
| Strength measurement | Paper clips used as weights |
| Supply required | Low-voltage DC power supply |
| Suggested supply | Designed for use with ScienceLab power supplies |
Typical Use
The unit is set up for a clean two-part investigation. In the first part the current is held steady while the connection is moved from one tapping to the next, and students count how many paper clips the electromagnet will hold at each number of turns. In the second part the tapping stays fixed while the supply is adjusted, with an ammeter recording the current each time. Plotting paper clips against turns and against current gives two graphs that make the relationship obvious, and it is an equally good basis for a science fair project on electromagnet strength.
For consistent results, use clips of the same size, bring them up to the electromagnet the same way each time, and switch the current off between readings so the coil does not warm up during the run. Groups can share one supply by taking turns, since the tappings allow each reading to be set up in seconds.
Manufacturer
The Electromagnetic System is produced by Jain Scientific Equipments Private Limited, an Ambala, Haryana manufacturer that sells its teaching apparatus under the ScienceLab name and designs units like this one to work alongside its own power supplies. The ScienceLab company profile has more on the business.
Related Electricity and Magnetism Equipment
These items supply, control and measure the current in this investigation:
- Precision Variable Power Supply — a smoothly adjustable low-voltage DC source for the current-variation part.
- Digital Ammeter — records the coil current for each reading.
- Rheostat — an alternative way to vary the current from a fixed supply.
- Iron-Clad Electromagnet — a battery-powered electromagnet for comparison demonstrations.
- Circuit Breaker — shows an everyday application of a solenoid once the basics are understood.
Visit the Electricity and Magnetism category for further magnetism apparatus.
Frequently Asked Questions
Which numbers of turns can be selected?
The coil has tappings at 100, 200, 300, 400, 500 and 600 turns, giving six settings for the turns investigation.
What power supply is required?
A low-voltage DC power supply. The unit is designed to be used with ScienceLab power supplies, which can be quoted with it.
What is the maximum current the coil can take?
A current rating is not listed on this page. Please confirm it through our contact page before planning your current range.
How is the strength of the electromagnet measured?
By counting paper clips used as weights, which keeps the method simple and cheap to repeat.
Can students set it up themselves?
Yes. It is self-contained and runs on low voltage, so small groups can carry out the investigation under normal teacher supervision.
Do you supply complete class sets?
Yes. Tell us how many units and supplies you need, plus your delivery location in India or abroad, and we will send a combined quotation including warranty terms.
Request a Quote
Ask for a price on the Electromagnetic System via the contact page, or add it to the enquiry cart with a power supply and ammeter for each group.
Last updated: 24 September 2026
