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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.
What does the electromagnet pick up?
Ferrous metal.
What does an electromagnet pick up?
Iron, Nickel, Cobalt
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 much weight can a crane carry?
It depends on how big it is and what type it is. We had a mobile (can be driven over the road) crane here last year that could pick up 500 tons. I hear they build mobile cranes that can lift as much as 750 tons. Stationary cranes can lift a lot more, but are harder to move.
How could an electromagnet on a crane at a scrapyard be made to pick up heavier cars?
increase the current on the electromagnet
How does a crane use electromagnet?
A crane or junkyard crane uses an electromagnet to pick magnetic items up. The crane controls the electromagnet by using a a circuit that has a wire wrapped around a piece of metal that can be magnetized that's at the end of the crane's arm. When the circuit completes, the metal at the end of the cranes arm gets temporarily magnetized. When the current stops, the metal get demagnetized and can't pick things up anymore.
How can turning on the electricity allow the iron crane to pick up the car?
Connecting the electricity will activate the electromagnet.
What distance will a electromagnetic crane pick up weight?
That's going to depend on all of these parameters: -- number of turns of wire in the electromagnet's coil -- number of Amperes of current flowing in the coil -- size and material of the electromagnet's core -- weight of the object to be picked up.
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.
Will an electromagnet pick up a piece of copper?
no
What does the electromagnet pick up?
Ferrous metal.
How can a electromagnet pick up more metal things?
More than what? - An electromagnet can pick up metal due to its magnetism - assuming it is turned on. If you increase the current, the electromagnet becomes more powerful - but you must be careful not to pass too much current, otherwise the wires might burn through.
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!
What does an electromagnet pick up?
Iron, Nickel, Cobalt
Why will an electromagnet be able to pick up more steel cans than a permanent magnet?
An electromagnet is a stronger magnet.
How does an electromagnet work in a scrapyard?
In a scrapyard when the workers need to pick up a car there is a crane with a magnet on it. So when they see a car they turn the electric magnet on so it picks up the car and they turn off the electric magnet to drop the car.
