Electromagnets are used in 3 main ways in our society: 1) electromagnets are a workhorse in billions of electric motors that we see all around us, 2) electromagnets are used in many scientific and medical applications, like the particle colliders and MRI machines, and 3) electromagnets are a simple thing to make for kids science experiments – a battery and a coil of wire becomes an electromagnet.
How do electromagnets work?
Can any battery be used to make an electromagnet? Why or why not?
As long as the battery can produce a voltage and a current, it can be used. The amount of voltage and current will influence the strength of the electromagnetic field. These videos show a variety of batteries.
Where is the magnetic field created in an electromagnet?
The magnetic field forms around the wire carrying a current. By coiling the wire, it amplifies the effect.
Why is a magnetic field generated around the electromagnet?
Is an electromagnet a temporary or permanent magnet? Why?
In an electromagnet, the magnetic effect turns on when current flows through the wire and turns off when the current stops. In a permanent magnet, the magnetic effect is always there.
Why doesn’t an electromagnet short circuit?
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