Example 2: Find @r, @, B and v at @=O Solution 1 D20∠0°50 5mH 2uFTV √LC √5×103×2X004 Q=a,RC=104×400×2×106=8 10∠0° B =1250 m44005m2uF V=RI,=400×10×10-3∠0° =4∠0° RIs L jOIs=-j80mA JOL jO,l Ic=jO Cv=jo, crls=jo Is =j80m4 o>>l, parallel resonance--current resonanceExample : Find ,Q,B and V at .  r  =  r • 2 Solution: 4 3 6 10 5 10 2 10 1 1 =    = = − − LC r 10 400 2 10 8 4 6 = =    = − Q r RC = = 1250 Q B  r V V R Is   4 0 400 10 10 0 3 =  = =    − • • jQ I j mA j L R I j L V I s r s r L = = = − = − 80 • • • •   I C = j r CV = j r CRIs = jQ Is = j80mA • • • •   Q>>1, parallel resonance--current resonance