Q. 75.0( 1 Vote )

A series AC circuit has a resistance of 4 Ω and a reactance of 3 Ω. The impedance of the circuit is
A. 5Ω

B. 7Ω

C. 12/7Ω

D. 7/12 Ω

Answer :

The impedance of an AC circuit is given by … (i), where R = resistance, X = impedance.


Given: Resistance R = 4 Ω and Impedance X = 3 Ω


Substituting these values in (i), we get


Impedance Z = = 5 Ω (Ans)

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