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4. A series RLC circuit with R = 510ohma, L = 25 mH and C =...

4. A series RLC circuit with R = 510ohma, L = 25 mH and C = 240 nF, is connected to an alternating current source with Em = 17 V and ω = 6.3 krad / s. Calculate a) the phase difference between Em and I. b) what is the average ratio at which energy is dissipated ?. One second Capacitor with the same capacitance is connected in series with the other components. Determine the value of c) Xc, Z, d) I increase, decrease or remain the same? f) draw the phasor diagram including Em, VR, VC and VL

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