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20 March, 00:12

Which actions increase the strength of an electromagnet? 1-Increase the number of coils and increase the strength of the current. 2-Increase the number of coils and decrease the strength of the current 3 - Decrease the number of coils and increase the strength of the current. 4 - Decrease the number of coils and decrease the strength of the current.

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  1. 20 March, 00:18
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    The correct answer option is 1-Increase the number of coils and increase the strength of the current.

    Step-by-step explanation:

    An electromagnet is a soft metal core which is made into a magnet by passing the electric current through a coil surrounding it.

    Unlike a permanent magnet, the strength of an electromagnet can be changed and there are several ways to do it.

    One of the (most common and easiest) way is to increase the strength of the current is to Increase the number of coils as the strength of the electromagnet is directly proportional to the number of coils around the solenoid.
  2. 20 March, 01:00
    0
    Electromagnet is a type of magnet which is produced by passing electric current through a magnetic material such as iron. Here electric energy is converted to magnetic energy. The magnetic material is coiled with wire through which electric current is passed. Increasing the number of coils and increasing the strength of the current increases the strength of the electromagnet. However, the electromagnet loses its magnetic properties when the current flow is switched off.

    (Answer) (1) Increase the number of coils and increase the strength of the current.
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