Question

which of the following statement is true about electromagnets 1]in these magnets permanent magnet are used 2)these magnets are permanent magnet 3)natural magnet are more powerful than electromagnets 4)these magnet work only when electric current passed through them

Answer 1

4th one is correct mark as brainliast if correct

Answer 2

According to the question;

The statement which is true about electromagnets is.

4)these magnet work only when electric current passed through them.

Without electricity these magnets do not work,these magnets are best examples of the magnetic effect of the electrical flow.