Electrical Engineering - RC Circuits - Discussion
Discussion Forum : RC Circuits - General Questions (Q.No. 10)
10.
A 47 
resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance, Z?
resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance, Z?129
12.9
167
73
Discussion:
5 comments Page 1 of 1.
Shamraay96@gmail.com said:
1 decade ago
z means impedence of ac circuit ,it consist of a resistance, inductance,capacitance.in this quastion only resistance and capacitance.Z^2=R^2+C^2.Answer option "A" is right.
Amit Kumar Saha said:
1 decade ago
R=47 & Xc=120,
Then, Z=sqrt(R^2+Xc^2) = 128.87 == 129 (a)
Then, Z=sqrt(R^2+Xc^2) = 128.87 == 129 (a)
Saurabh said:
7 years ago
Thanks @Amit.
M.Aqsam Raza said:
5 years ago
R=47 , Xc =120.
Z= √(R^2+Xc^2) = 128.87.
Z= 129.
Z= √(R^2+Xc^2) = 128.87.
Z= 129.
Marbudki toi said:
5 years ago
How Z = √(R^2+Xc^2)? Please explain me.
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