RC Circuits

Q1: 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?

A 129 

B 12.9 

C 167 

D 73 

ANS:A - 129 

R=47 , Xc =120.
Z= √(R^2+Xc^2) = 128.87.
Z= 129.



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