How to make an Electromagnet?

Chapter 3 is a very interesting topic, trust me.. u can create so many cool stuff using magnet.
Magnetic field is something mysterious.. some magician used the concept to trick everyone.
U can also try some interesting stuff.. Just look at this video ,

In electromagnet, there's only few calculation and formula involved. Therefore u must really understand the concept. However there's lots of important Rules & Law which need to be fully understood. Please dont try to memorise everything without knowing the real story

3.1: Analysing the Magnetic of Current Carrying Conductor

1. First, u must be able to state what an electromagnet is??

An electromagnet is a temporary magnet produced on iron core when a coil of wire is wrapped around it. Current is supplied along the wire which then produces magnetic field. The iron become magnetized temporarily.

Look at video 3.1. This short video helps you understand how electromagnets turn electricity into magnetism.

Video 3.1