Coin Motor | English
Channel: Arvind Gupta
Date: 29/09/2015

Well what you are seeing is a splendid Homopolar Motor. To make this simple Coin Motor you need a cylindrical Neodymium Strong Magnet, a 1.5-volt Normal Torch Battery, three nickel coins which stick to the magnet and some electrical wire. Stick the magnet in the centre of the small coin. Then stand the two big coins one on top of the other. Because of the strong magnet you will be able to make this formation very easily. Take the battery and suspend the assembly of the coins and magnet from the button of the battery. Take a 20-cm long electrical wire. Connect one end to the flat base of the battery. Now touch the other end of the wire to the rim of the magnet. This will complete the electrical circuit because the coins will be able to conduct electricity. Then the three coins and the magnet will start spinning very fast like a motor. Thousands of students have enjoyed making this motor. We are sure you will love it too.

This work is supported by IUCAA(www.iucaa.ernet.in) and TATA Trust (www.tata.com/aboutus/sub_index/Tata-trusts)

Credits:,Ashok Rupner, Manish Jain, Pradnya Pujari, Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org