1.A series RLC circuit has component with followingvalues L =20mH, C= 80nF R= 25

Question

1.A series RLC circuit has component with followingvalues L =20mH, C= 80nF R= 25 ohms and Vmax =100V, Calculate the impedance phase angle resonant frequency amplitude of the current athe the resonant frequence 2. A circuit contains only two of the three elements L,C, R. When connected to a 120 V, 60Hz ac generator, thecurrent of 6.4 A langs the voltage by 30 degrees. What arethe two elements and their values? 1.A series RLC circuit has component with followingvalues L =20mH, C= 80nF R= 25 ohms and Vmax =100V, Calculate the impedance phase angle resonant frequency amplitude of the current athe the resonant frequence 2. A circuit contains only two of the three elements L,C, R. When connected to a 120 V, 60Hz ac generator, thecurrent of 6.4 A langs the voltage by 30 degrees. What arethe two elements and their values?

Explanation / Answer

.A series RLC circuit has component with followingvalues L =20mH, C= 80nF R= 25 ohms and Vmax =100V, Calculate the impedance is given when the frequency is known andis
(1/C-L)2+R2 phase angle   is given bytan-1(1/C-L)/R resonant frequency   is when the impedance isminimum i.e =1/LC=25KHz amplitude of the current athe the resonantfrequence   is Vmax/R=100/25=4amp 2. A circuit contains only two of the three elements L,C, R. When connected to a 120 V, 60Hz ac generator, thecurrent of 6.4 A langs the voltage by 30 degrees. What arethe two elements and their values?
the inductor is a must circuit element here
tan-1(1/C-L)/R if R is 0 then thephase lag is +or - 90 degrees
so L and R are the circuit elements present
1/3=L/R
and2L2+R2=(120/6.4)2
solve

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