electrical vs voltaic

electrical

adj
  • Related to electricity (or electronics) 

noun
  • An electrical engineer. 

voltaic

adj
  • of or relating to electricity. 

  • producing electricity by chemical action. 

  • reminiscent of the action of electricity: thrilling, shocking, dramatic. 

How often have the words electrical and voltaic occurred in a corpus of books? (source: Google Ngram Viewer )