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diff --git a/608/CH16/EX16.09/16_09.sce b/608/CH16/EX16.09/16_09.sce
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+//Problem 16.09: A coil of inductance 0.20 H and resistance 60 ohm is connected in parallel with a 20 μF capacitor across a 20 V, variable frequency supply. Calculate (a) the resonant frequency, (b) the dynamic resistance, (c) the current at resonance and (d) the circuit Q-factor at resonance.
+
+//initializing the variables:
+C = 20E-6; // in Farads
+R = 60; // in Ohms
+L = 200E-3; // in Henry
+V = 20; // in Volts
+
+//calculation:
+fr = ((1/(L*C) - R*R/(L*L))^0.5)/(2*%pi)
+Rd = L/(R*C)
+Ir = V/Rd
+Q = 2*%pi*fr*L/R
+
+printf("\n\n Result \n\n")
+printf("\n (a)Parallel resonant frequency, fr = %.2f Hz ",fr)
+printf("\n (b)the dynamic resistance,RD = %.1f ohm ",Rd)
+printf("\n (c)Current at resonance = %.2f A ",Ir)
+printf("\n (d)Q-factor = %.2f",Q)
+\ No newline at end of file