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# How does an electromagnet turn on and off?

Updated: 4/28/2022

Wiki User

14y ago

They turn on and off by taking the battery out and putting it back in or if it has a switch then you could use that.

Wiki User

14y ago

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Q: How does an electromagnet turn on and off?
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### How can you turn off an electromagnet?

An electromagnet requires electric power to be a magnet. You turn it off the same way you turn off a light, by turning the switch.

### How do you turn off an electromagnet?

This is what makes a magnet an electromagnet - the ability to turn it on and off... Anyway, electromagnets can be turned off with either the help of a switch, or just by disconnecting the power supply.

### When would you want to use an electromagnet rather than a permanent magnet?

When you need a magnet you can turn on and off an electromagnet is used.

### What advantages are there in being to turn a electromagnet on and of?

Being able to turn electromagnetic on and off is what separates it from a normal magnet.

### Electromagnet is a temporary magnet because you can?

turn it off by unplugging the current source.

### What is an advantage of using an electromagnet over a permanent magnet?

The advantage of an elecromagnet is that you can turn it on and off with a simple switch. So for example if you want to pick up a scrap car with a crane/electromagnet and move it, you can turn the electromagnet off when you want to release the car. You could not do the with a permanent magnet obviously.

### Does an electromagnet keep is force when the electricity goes off?

no because you need electricity to turn it on

### How are electro magnets different from other magnets?

An electromagnet can be turned on and off, with an electric current and a magnet can not turn off

### What happend to a electromagnet when you turn it off?

It stops behaving like a magnet. It loses all its power.

### Why would electromagnet be used in a recycling yard rather than a strong permanent magnet?

Because with an electromagnet, you can turn it off and on - you can pick things up with it then drop them again.

### How do you deactivate an electromagnet?

Electromagnets are energized with an electric current. Turn the power off to stop the current will do the trick.

### How can you make a electromagnet lose its magnetism?

by decreasing its current,by decreasing turns of coil