i was doing some revision,and used an online site for a textbook because we dont get decent ones that tell us what we need to know...

ok i was reading my notes,and i have one method that i understand,but cant tell if its a correct example,and the 2nd one,is an 'answer' to a question i did in an assignment,problem is i completely have no idea what hes doing in it.

thanks alot!

i know its simple,yet my tutor hasnt explained it well in a way i can use.

i have looked at a site but it uses different methods...(listed at bottom)

is this correct ??
(AC Parallel circuit.)
Obviously Convert mH or F into Xl/Xc Reactance

eg
5Ω

work out angle if any resistance included =
eg
ta-1= Xl/r
=-53°

Z = 5 Ω

Dont worry! i just realised that the way he worded the question(extremely strangely) that its infact
in parallel
resistor,
cap,
inductor+resistor
which explains WHY the angle was calculated for that,haha stupid wording of questions could save so much effort if written properly!

as to the funny sin,cos stuff at the end im not sure,i need a Triangle.. to imagine whats going on

ive made an excel spreadsheet which works out the currents through each part and angle,im working on the Total Z and total I and total phase angle now :-)