Science

An electromagnet is the most powerful type of magnet there is . It is a magnet with a current running through it that can be turned on and off , Why might it be useful to be able to turn the electromagnet on and off ?
To control the strength of the magnet
To not waste electricity
To latch onto and let go of objects
To reduce wearing out of the magnet over time

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    Have you not seen these huge cranes that have an electromagnet on the end of a boom that is used in picking up metals and loading dump trucks?

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    DrBob222
  2. Anyone got the answers?

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  3. OK I'll post them when I get dont

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  4. The answers are...
    1.To latch onto and let go of objects
    2.How quickly electrical energy moves in a circuit
    3.When a current runs through a conductor
    4.Elections are moved thorough a circuit creating that current interacts with a magnet moving the conductor in the orientation of the field
    5.electromagnetic field

    100% correct guys and girls

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  5. He is right ^^

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  6. They are correct ^^

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