A series RC circuit contains two resistors and two capacitors. The resistors are 39 ohms and 56 ohms. The capacitors have capacitive reactances of 80 ohms and 40 ohms. When calculating the circuit values, the total resistance used is: a. 215 ohms
b. 95 ohms
c. 25 ohms
d. 120 ohms

The  correct option is b

Explanation:

From the question we are told that

    The resistance of the first resistor is  

     The resistance of the second resistor is  

      The capacitive reactance of the first capacitor is

       The capacitive reactance of the first capacitor is

Generally given that the resistors are connected in parallel , their equivalent resistance is  

=>        

=>        

Generally given that the capacitors are connected in parallel , their equivalent capacitive reactance  is  

=>      

=>      

Hence the impedance of the circuit is  

=>                

Generally from the impedance equation , the total used resistance is  

gas and liquid

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