EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The nail becomes magnetic
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The nail breaks
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The nail catches on fire
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Nothing happens to the nail
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Detailed explanation-1: -When a wire is wrapped around a magnet, the magnetic field induces electricity inside the wire. This is one of the examples of electromagnetism.
Detailed explanation-2: -The Electromagnet. If we concentrate the magnetism created by a current carrying wire by wrapping it in a tight coil around an iron core (here a nail), we get an electromagnet: a magnet we can turn on and off! This activity involves your building an electromagnet and playing around with it.
Detailed explanation-3: -How It Works Whenever electricity flows through a wire, a magnetic field surrounds the wire. The nail now becomes magnetic and will pick up the paper clips.
Detailed explanation-4: -A magnet made from just a coil of wire isn’t very strong. But when you coil the wire around an iron nail, the magnetic domains inside the nail line up and make a strong, temporary magnet. If you disconnect the wire, the magnetic field disappears and the nail is no longer a magnet.