I could also investigate the material of the coil, which is another factor affecting the strength of an electromagnet. I could investigate this, by placing different materials, like iron, copper, and steel inside the core of the electromagnet, I would keep current and the number of turns constant.
For other video games with this title, see E.T. the Extra-Terrestrial in video games. E.T. the Extra-Terrestrial (also referred to simply as E.T.) is a 1982 adventure video game developed and published by Atari, Inc. for the Atari 2600 video game console. It is based on the film of the same name, and was designed by Howard Scott Warshaw.
The Yanmar was founded in Japan in 1912. The firm has a long history with small diesel engines. The agricultural equipment division of the company was started in 1961. Yanmar entered into an arragement with John Deere and began building several utility tractor models in the early 1980s for Deere. Yanmar continues to be an engine suppiler for Deere's utility tractors. Grey-market imported Yanmar tractors are popular in North America for their low cost and quality.