This is a graphic novel about Tesla, Bell and Edison that covers the basics of the war of the currents, and who some of the major players in the electrical field in the 1800s were:
https://www.amazon.com/They-Changed-World-Campfire-Graphic/dp/9380741871
I got this from my library and actually really enjoyed it, even though it's probably aimed more at teenagers. It focuses on the rivalries and doesn't get super specific about the physics, but they do discuss specific inventions.
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George Westinghouse is a really interesting figure to look into also.