hi,
Well done.!
I thought you may like to see a simulation of your circuit.
Note:
The 180 degree phase difference of Vc and Vl, also that the current is Zero when Vc and Vl are at a maximum.

E

 

thanks very much for all yours and @WBhan help. One question down only a few more to struggle with.

Nice touch with the circuit as well and waveforms.

Thanks Alan

 

so that would mean VL=Vc which is I x XL = 2.5 x 39.79 = 98.475V

Q-factor then would be Vc/Vs 98.475 / 10 = 9.8475V

DISREGARD!! I was thinking that this was a different thread.

Since the R, the L, and the C are in parallel, they are guaranteed to have the same voltage across them. That's what "parallel" means!

 

So what I have put is incorrect?

 

So what I have put is incorrect?

No. I was thinking that this was another thread that dealt with parallel RLC components but didn't realize my mistake until after I posted this response and I don't see a way to delete the post. So disregard completely. As for whether the Q calculation is correct or not, I haven't looked at it.

Sorry for the confusion.

 

oh right no problem, had me very concerned and worried lol.