Question

5. a. Describe briefly how an iron rod can be magnetised using the electrical method.
b. How can the strength of the magnetised iron rod be increased?
c. What happens to the magnetised iron rod when current stops flowing?
d. What is the difference between a steel rod and an iron rod which are magnetised using
this method?​

Answer 1

Explanation:

When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field. The piece of iron has become a magnet. Some substances can be magnetized by an electric current.

Answer 2

Explanation:

a)An iron rod is magnetized by placing it inside a coil of wire and passes electric current in it.