11.2. Power Generation and Transmission

Here we look at some important principles in Electrical Engineering, including diving into a bit more depth into alternating current. But before we start, why do we use alternating current rather than direct current for our mains electricity?

Let's begin with a bit of historical context. In the late 19th century there was a rivalry between the proponents of alternating current (notably Nikola Tesla) versus those who believed in the use of direct current (led by Thomas Edison). Both factions were competing to get widespread acceptance for electric lighting. The rivalry ended up in both factions trying to discredit each other as being more dangerous, culminating with the invention of the electric chair to demonstrate the dangers. One notable victim of this 'war of currents' was an elephant called Topsy, electrocuted in front of a live audience. Learn more about the story behind the 'war of currents' below:   

AC Generators