Part 1: https://www.youtube.com/watch?v=kdrP9WbJIb8 Previous video: https://www.youtube.com/watch?v=OramJZmoekA Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h Buy your transistor tester here (affiliate links): Ebay: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=311343672563&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg Aliexpress: https://s.click.aliexpress.com/e/_dSyi2F8 Amazon.de: http://amzn.to/1G4aR0E Amazon.co.uk: http://amzn.to/1Gt948J In this video I will explain what reactance means and how you can calculate the amount of reactance for a coil. I will also talk a bit about reactive power and phase shift. Music: In the Hall of the Mountain King, Kevin MacLeod Killing Time, Kevin MacLeod (incompetech.com)