U-Core Magnetic Field Apparatus

Description

When current passes through the coil windings placed on the core, the U-shaped core concentrates the resulting magnetic field and develops distinct north and south poles at its open ends — giving students a direct, visible link between electricity and magnetism. It is a standard way to introduce electromagnetism, following on naturally from experiments with permanent magnets like a horseshoe magnet.

Depending on the supplied configuration, the apparatus may be used to investigate how field strength changes with current or the number of coil turns, to compare an electromagnet with a permanent magnet, or to demonstrate simple electromagnetic lifting. All such experiments should be run under teacher supervision with an approved, current-limited power supply.

Specifications

Care & Maintenance / Safety Note

• Use only an approved, current-limited power supply and never exceed the coil’s rated current, to avoid overheating the windings.
• Run this experiment under teacher supervision, and switch off the current between observations to keep the coil cool.
• Keep the apparatus away from moisture, since a damp coil or core can affect readings and pose an electrical risk.
• Store the apparatus in a dry place, away from strong external magnetic fields that could affect the core over time.

Why Choose LabEquip

LabEquip supplies physics apparatus for electricity and magnetism, alongside a wider catalogue of lab equipment for schools and colleges. If you are building out a magnetism unit, our Horseshoe Magnet pairs naturally with this apparatus for comparing permanent and induced magnetism, and our Precision Spherometer supports related measurement work. Browse our full range of lab equipment for more options.

FAQ

Q: How does this apparatus create a magnetic field?
A: An electric current flowing through the coil windings around the U-shaped core generates a magnetic field, which the core concentrates and channels out through its two open ends as distinct poles.

Q: What is the exact current rating and coil specification?
A: The exact current rating and coil details are not specified for this listing. Please contact our sales team to confirm before you order.

Q: How is this different from a permanent horseshoe magnet?
A: A permanent magnet like a horseshoe magnet keeps its magnetism at all times, while this apparatus is only magnetic while current flows through its coil — turning the current off removes most of the induced magnetism.

Q: What safety precautions should I take when using it?
A: Use an approved, current-limited supply, keep within the coil’s rated current, run the demonstration under teacher supervision, and switch off the current between observations to prevent overheating.

Q: Can I use it to show how field strength changes with current?
A: Depending on the supplied configuration, yes — increasing the current or the number of coil turns typically increases the strength of the induced magnetic field, which can be observed with a compass or iron filings.

Q: What class level is this apparatus intended for?
A: It is used in school and college physics courses that introduce electromagnetism, typically alongside topics on current, circuits and magnetic fields.