Write down basic laws of magnetism.write down the used of magnet
Answers
Answer:
The most basic law of magnetism is that like poles repel one another and unlike poles attract each other; this can easily be seen by attempting to place like poles of two magnets together.
Further magnetic effects also exist. If a bar magnet is cut into two pieces, the pieces become individual magnets with opposite poles. Additionally, hammering, heating or twisting of the magnets can demagnetize them, because such handling breaks down the linear arrangement of the molecules. A final law of magnetism refers to retention; a long bar magnet will retain its magnetism longer than a short bar magnet.
Explanation:
Magnets are used to make a tight seal on the doors to refrigerators and freezers. They power speakers in stereos, earphones, and televisions. Magnets are used to store data in computers, and are important in scanning machines called MRIs (magnetic resonance imagers), which doctors use to look inside people's bodies.
Answer:
A basic law of magnetism is that unlike poles attract each other. Two bar magnets can illustrate this. One is hung so that it swings freely. A pole of the second is brought, in turn, near each of the two ends of the hanging magnet.
uses of magneti:
Magnets are used to make a tight seal on the doors to refrigerators and freezers. They power speakers in stereos, earphones, and televisions. Magnets are used to store data in computers, and are important in scanning machines called MRIs (magnetic resonance imagers), which doctors use to look inside people's bodies.