Question

LC Oscillations. Problem and formula sheet is attached. I cant get number 3

Answer 1

1. I=v/z=110v/11Ω=10A

2. sinø=(Imax)(X)/v=(10A)(9Ω)/110V

ø=54.9°

3. I dont know what to do for this. I want to use Xc=1/ωC and solve for C but I need to first find Xc somehow

Answer 2

Xc needs to equal the reactance of the coil, which is given as 9 ohms at 60Hz.
\[9=\frac{1}{2\times \pi \times60\times C}\]
\[C=\frac{1}{9\times2\times \pi \times60}\times10^{6}\ \mu F\]

Answer 3

thanks man you got it

Answer 4

You're welcome :)