I have an exemption test for Circuits in 2 days and I've been doing practice problems. I came across this and am very confused how the reactance switches signs in the simplify step. Can someone explain this to me or is it a typo on that site (Like I hope it is.)? Thanks.
No, I mean just the reactance part of the impedance in the step that converts to milli instead of kilo. It becomes 1/3m + 1m - j0.57m The signs on the DC resistance stayed positive and the reactance due to the inductor/cap flipped (It does come out as the right magnitude). EDIT: Oh Snap! I got it...I think. It is (1 < 0)/(1750 < 90) which makes it become -90.
I'm guessing your question is how does one get ..... Are we agreed that 'm' just stands for So Also remember that for the complex operator 'j' combining these two concepts Or you do it like you did in your EDIT .....