OHM SWEET OHM by Dr. James D. Livingston   Free electrons of course have ability To move to and fro with agility But despite being swift If there's no net drift It's a clear exercise in futility Yet all of this random activity Gives a metal a special proclivity To amperes provide When volts are applied With a property called conductivity So a fellow named Ohm with felicity Dreamed up a law of great simplicity V equals I R Is what made Ohm a star It's the basic law of electricity

Georg Ohm 1789-1854