Magnetism (PART III)

Hi guys! So this would be my final blog post on the topic of magnetism. In this report I will be talking about electromagnetism.

Electromagnetism is simply magnetism produced by the flow of electric current. This means the magnetism can be easily turned on and off by controlling the current. Another advantage of electromagnet over a normal permanent magnet is that its magnetic force can be controlled by changing different factors while a permanent magnet has a set strength of its magnetic force.

If you want to find out the direction of the field around a wire, you can use the right hand grip rule as shown in the picture above. 

Ways to increase the strength of a electromagnet: 

i) Increase current

ii) Increase number of coils

iii) Use a soft iron core

Uses of electromagnet:

i) Motors, Generators 

ii) Relays

iii) Maglev Train

iv) Cranes in junkyard to sort out metals

Thank you for reading my blog and it has been a pleasure sharing my research with you.

- Kevin