In this fascinating Science experiment footage, a 'lead' pencil is connect to a 12 volt car battery. Attached to the pencil is a legoman.
As the current flows through the graphite lead, heat is produced. The heat causes the wood to smoulder, smoke and eventually burst into flames.
Different pencils are used. Those with thin leads, have greater resistance which means less current and less heat produced. They take longer to burn.
The thick pencil has a graphite lead with less resistance, allowing more current to flow causing it to heat up quicker and burst into flames sooner.
++Clients Note++ There is unedited footage at the end of this footage to allow freedom of editing.
The music is "Become Unstoppable" produced by NO4H
NO4H channel url: https://www.youtube.com/channel/UC4uPuWgWuJqQJpDilK_-GmA
who has given approval for its use in this video.

Video produced by Jacob Strickling, creator of the YouTube Channel 'Make Science Fun' who aims to inspire young people in the ways of Science.