You are given an iron nail, a torch cell and a long piece of insulated copper wire. With the help of a labelled neat diagram, describe in steps how you will make the nail, an electromagnet.
Tick the most appropriate answer.
Which of the following methods is used to magnetize a magnetic without touching it by a magnet ?
- Using electric current
- None of these
How will you make an iron bar electromagnet ? Draw a diagram showing the polarities of the electromagnet ?