Question

You are provided with a 5 cm long and 1/2 cm thick soft iron rod. How will you convert it into electromagnet?

Answer 1

By wrapping or passing electric current through soft iron rod you can convert it into electromagnet. Because electric current has magnetic effect.

Answer 2

Answer:

To magnetize iron rod permanently wrap a coil of wire around it and connect it to a battery, this flow of electrons through the wire will align the molecules in the iron and make them line up with a north and south pole