Alternating CurrentMedium
Question
The capacitance of a telephone wire of length 300 km is 0.01 μF per km. If wire caries an ac of 5 kHz, what should be the value of an inductance required to be connected in series so that impedance is minimum-
Options
A.0.36 mH
B.3.6 mH
C.0.6 mH
D.3.6 H
Solution
Minimum value of impedance is for
XL = XC ⇒
⇒ L = 
= 0.36 mH
XL = XC ⇒
⇒ L = = 0.36 mHCreate a free account to view solution
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