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Write True if the statement is correct and False if not.
1. A magnet is usually made of iron
2. An electromagnet attracts like a real magnet.
3. Electromagnets are temporary magnets.
4. A nail iron is not a magnet, but it can be turned into one.
5. Some transportation systems use magnets, too. Trains, subwa
these​

Sagot :

Answer:

1. True

2. True

3. True

4. False

5. True

Explanation:

1. All magnets are made of a group of metals called the ferromagnetic metals. These are metals such as nickel and iron. Each of these metals have the special property of being able to be magnetized uniformly.

2. An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic core concentrates the magnetic flux and makes a more powerful magnet.

3. An electromagnet is called a temporary magnet because it produces magnetic field so long as current flows in its coil.

I hope it helps po.