Useful is an understatement. I’ve just spent the last 2 hours stuck on a question like this in a university assignment, and you just saved me. Thanks so much 😂
Doing Level 3 electrical installations and found this very useful and even gave a more in-depth look at this problem. different yet similar calculations. always a joy to see different methods to work out one question as this gives more understanding of this question. Thanks for this video. still useful 5 years later. that's one of the beauty of maths.
Brilliant this is, thank you for explaining the Voltage magnification side as well, I have been changing formulas all over thinking this cant possibly be correct. Videos like this make me feel daft, which I am, but hey I'm learning ;)
Ah yes, of course, it's a forehead slapping moment here in my humble cave. Thank you. When you get too focused on DC circuits, you forget that AC phase angle can create situations that seem paradoxical, where current strangely moves toward the higher voltage gradient. It's all about phase angle, which would be completely ignored by a voltmeter placed across various components.
Hi Mike - yes, and the result for XT will be negative. This makes no difference to the value of Z, because when the negative value of XT is squared, it becomes positive anyway. But it will mean that the resulting angle of Z will be negative negative, because it will now be below the horizontal. Hope this helps.
