Electromagnet ‘U’ shape Two Coils

Product Code : SCL-AM-12108

The U-shaped electromagnet with two coils is a core educational device used for demonstrating magnetic fields, electromagnetic induction, and lifting power in physics laboratories. Designed for science students and educators, this classic apparatus provides an interactive, hands-on way to visualize how electric current generates powerful temporary magnetic forces.

Product Description

The U-shaped electromagnet with two coils from Science Lab Supplies features a high-permeability soft iron core bent into a classic horseshoe configuration. It is wound with two independent, interconnected coils of insulated copper wire that optimize magnetic flux density across the two opposing poles. This architectural design enables a concentrated magnetic pull, allowing clear quantitative and qualitative evaluations of electromagnetic principles.

Built specifically for high-frequency classroom usage, the apparatus includes a removable iron armature equipped with a central suspension hook. When energized by a low-voltage DC power supply, the core becomes strongly magnetized, instantly securing the armature. This robust assembly serves as an essential component within standard physics lab equipment arrays worldwide.

Key Features

• Solid Soft Iron Core: Provides high magnetic permeability and minimal remanent magnetism when the electrical current is switched off.
• Dual Wound Coils: Features two heavy-duty spools wrapped with premium insulated copper wire to maximize electromagnetic field strength.
• Removable Armature with Hook: Includes a precision-machined soft iron keeper with an integrated hook for easy weight-attachment tests.
• Insulated Connection Terminals: Equipped with 4mm safety binding posts for secure, hassle-free electrical lead connections.
• Durable Mounting Base: Secured firmly to a stable, non-conductive platform to ensure safe benchtop operations during lab experiments.

Technical Specifications

What's Included in the Kit

• 1 x U-shaped soft iron core assembly with two pre-wound coils
• 1 x Soft iron armature (keeper) with an integrated suspension hook
• 1 x Experiment guide with wiring schematics

Applications / Uses

• Demonstrating the direct relationship between current, number of wire turns, and magnetic field intensity.
• Conducting weight-lifting experiments to quantify the physical lifting power of variable electromagnetic currents.
• Integrating into comprehensive electricity and magnetism apparatus modules for school physics curricula.
• Supplementing custom student science kits focused on electromagnetic induction and Lenz's Law.
• Serving as a reliable reference standard among high-school level laboratory instruments.

How to Use the U-shaped Electromagnet with Two Coils

1. Mount the Setup: Place the apparatus safely on a flat, stable laboratory benchtop.
2. Position the Armature: Position the soft iron armature cleanly across the two polished magnetic poles at the open ends of the U-shaped core.
3. Connect to Power: Connect the terminal binding posts to a regulated low-voltage DC power supply set between 4V and 6V using standard banana plug leads.
4. Energize the System: Turn on the power supply to energize the two coils and activate the strong magnetic attraction between the core and the armature.
5. Perform Measurements: Suspend standard laboratory slot weights carefully from the armature's hook to test, measure, and record the magnetic lifting capacity.
6. Power Down: Remove the weights, then turn off the electrical current to demagnetize the core and release the armature safely.

Safety Note: Always utilize low-voltage DC currents as specified. Do not exceed the maximum recommended 2 A current capacity to avoid thermal overheating of the insulated coils.

Care & Maintenance

• Keep Pole Faces Clean: Wipe the polished pole faces with a light, dry microfiber cloth after use to prevent rust or grease accumulation.
• Dry Storage Environment: Store the apparatus inside a low-humidity storage cabinet alongside the armature to preserve the core's magnetic properties.
• Check Electrical Terminals: Inspect the terminal post screws periodically to ensure solid electrical contact and avoid fraying connection leads.

Why Choose Science Lab Supplies

Science Lab Supplies is a premier manufacturer and global exporter of high-precision laboratory instruments and didactic models. Backed by extensive manufacturing experience, we supply educational institutions in over 40 countries with reliable, curriculum-aligned gear. Our production facilities maintain rigid quality control parameters, ensuring that every product delivers accurate performance, exceptional longevity, and strict compliance with global educational supply safety standards.

Frequently Asked Questions

What is the primary function of a U-shaped electromagnet with two coils?

The primary function is to demonstrate how electrical currents generate temporary magnetic fields. The two coils work together to concentrate magnetic flux across the U-shaped core's poles to lift a soft iron armature.

Why does this electromagnet use a U-shaped core instead of a straight bar?

A U-shaped or horseshoe core brings both the North and South magnetic poles into the same geometric plane. This configuration doubles the attractive force on a flat armature by completing the magnetic circuit efficiently.

What voltage source is safe to use with this classroom apparatus?

This apparatus is optimized for low-voltage educational environments and should be powered by a regulated bench DC power supply delivering 4V to 6V.

Does the core remain permanently magnetized after switching off the power?

No, the core is manufactured from high-permeability soft iron, which loses its magnetic properties almost immediately once the electrical current is disconnected.

Can you adjust the magnetic lifting capacity of this device?

Yes, you can adjust the magnetic lifting capacity by varying the input voltage or current from your laboratory power supply, showing students the direct correlation between electrical current and magnetic strength.

Explore our full inventory of core educational setups by visiting our comprehensive physics lab equipment collection page.