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A device on the end of a crane to lift cars and junk
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∙ 11y ago
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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.
Is a electromagnet only charged when electric current passes through?
Basically, yes. However, especially when the electromagnet uses iron, it will most likely have some residual magnetism when the current is switched off. Note: You shouldn't used the word "charged" in this context. That refers to electrical charges, and is not usually used for magnetism.
If an electromagnet were used instead of a bar magnet to pick up nails the electromagnet would do what?
It will pick up the nails the same way a bar magnet would do!
Which metal is not used as a electromagnet?
Most metals. eg Aluminium, copper, tin, uranium
Which scale would most likely be used to tell how much earthquake damage was done to homes and other buildings?
The Mercalli scale would most likely be used to measure earthquake damage.
What type of server would most likely be used first by a network client in a corporate environment?
A DNS server would most likely be used first by a network client in a corporate environment.
Which scale would most likely be used to tell how much earthquake damage was done to home and other buildings?
The Mercalli scale would most likely be used to measure earthquake damage.
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 would glucose most likely be used by plants?
As a source of energy.
What type of industry would a scanner be most likely used in?
Retail
How can an electromagnet be used in a scrapheap?
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What industry Sodium perchlorate is been used?
Most likely it would be used in the pyrotechnics industry.
