Hi

I am having trouble getting the answer for the second part which used the current source. I have used nodal analysis like the one below, but still my calculated answer is incorrect

where
-j2 => 0.2 F
10j => 10j

Vo/8 + V0/-j2 + V0/10j = 4

P.S

 

Vo/8 + V0/-j2 + V0/10j = 4

It should be

Vo/8+j2xVo+Vo/10j=4

 

It should be

Vo/8+j2xVo+Vo/10j=4

if j2Vo then Vo/10j = -10jVo?

 

What you are forgetting is that

Z_inductor=jωL

Z_capacitor=1/(jωC)

For C=0.2F at ω=10

Z_C=1/(j2)=-j0.5

For L=1H at ω=10

Z_L=j10

Therefore ...

1/(Z_C)=1/(-0.5j)=j2

1/(Z_L)=1/(10j)=-0.1j

 

oh ok i see