electromagnet

«electromagnet» in Mova's school dictionary: a magnet made by passing electricity through a coil of… — its meaning for a pupil, its sense in the lessons and examples, with 1 sentence of Mova's corpora that use it.

part of speech

noun (an electromagnet, electromagnets)

meaning for a pupil

An electromagnet is a magnet made by passing electricity through a coil of wire, often wrapped around an iron core; it works only while the electricity is on. tree →

sense in the lessons

In science lessons pupils make an electromagnet with a battery, wire and an iron nail, and test how many paper clips it picks up. Electromagnets are used in scrapyard cranes, doorbells, speakers, motors and MRI scanners. Phrases: make an electromagnet, switch off the electromagnet, coil of wire.

examples

• We made an electromagnet with a nail, wire and a battery. tree →
• The electromagnet picked up 12 paper clips. tree →
• When we switched it off, the clips fell. tree →
• A crane with a huge electromagnet lifts old cars. tree →
• More turns of wire make the electromagnet stronger. tree →
• An electric doorbell has a small electromagnet inside. tree →

note

Starts with a vowel sound: an electromagnet. Countable. Unlike a permanent magnet, you can switch it on and off. It is made stronger by more coils, more current (a bigger battery), or an iron core. In tests you count clips to compare strength.

In the corpora

• Electromagnets are made with electricity and can be switched on and off.

Trees and pragmatics

Every meaning and example of «electromagnet» parsed by Mova, each sentence with its dependency tree and frames.