A Capacitor, A  resistor And a 80-mH Inductor Are In Series With A 50-Hz a.c source. Calculate The Capacitance If The Current Is In Phase With The Voltage. 

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Question

A capacitor, a  resistor and a 80-mH inductor are in series with a 50-Hz a.c source. Calculate the capacitance if the current is in phase with the voltage. 

Solution

Correct option is

In an L-C-R circuit, the current and the voltage are in phase , when  

               

     

Here, 

    

                                                               .  

  

             

SIMILAR QUESTIONS

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 capacitor, a 0.3-H inductor and a  resistor are connected in series with a 120-60Hz a.c. source. Calculate the impedance of the circuit.

Q7

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Q8

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Q9

An inductor L, a capacitor of  and the resistor of  are connected in series with an a.c. source of frequency 50 Hz. If the current is in phase with the voltage, calculate the inductance of the inductor.

Q10

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