Lably
Skip to content

Electromagnet

  • Science
  • Class 7–10
  • 3D model
  • English

Electromagnet: a 3D model for Class 7–10 Science, covering A current in a coil of wire makes a magnetic field; with no current there is no field., A soft-iron core inside the coil becomes a strong magnet only while the current flows (ideal soft core…, The core is not part of the circuit: insulation keeps the current in the wire, going round and round the core., Right-hand grip rule: looking at one end, anticlockwise conventional current makes that end a north pole., Reversing the current swaps the north and south poles and reverses every field arrow; the clips are still attracted..

The 3D viewer and AR open with a free Lably account.

Also called

magnetic effect of electric current · solenoid · coil and iron core · soft iron core · right hand grip rule · electromagnet poles · electric bell magnet · magnet from electricity · current carrying coil

Topics

  • A current in a coil of wire makes a magnetic field; with no current there is no field.
  • A soft-iron core inside the coil becomes a strong magnet only while the current flows (ideal soft core…
  • The core is not part of the circuit: insulation keeps the current in the wire, going round and round the core.
  • Right-hand grip rule: looking at one end, anticlockwise conventional current makes that end a north pole.
  • Reversing the current swaps the north and south poles and reverses every field arrow; the clips are still attracted.
  • At the same current, more turns make a stronger electromagnet. The rheostat is adjusted so the ammeter shows the same…

About this model

A GLB file of about 1690 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Lably procedural teaching model (electric-circuit.glb), adapted and animated for Lably AR. | User project asset (Lably); no third-party licence. Cell, switch base, contacts and blade geometry reused from Lably electric-circuit.glb; everything else newly authored.

More in Science