The term 'BIG NAME IN ELECTRICITY' can be summarized by two crossword solutions: Faraday (7 letters) and Ohm (3 letters). Michael Faraday was an English scientist who made major contributions to the field of electromagnetism and electrochemistry in the early 19th century. His discoveries laid the foundation for the modern understanding of electricity. Georg Ohm was a German physicist who formulated Ohm's Law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points. His work helped to further the understanding of electrical circuits.