A telephone wire of length 200 km has a capacitance of 0.014 µF per km. If it carries an ac of frequency 5 kHz, what should be the value of an inductor required to be connected in series so that the impedance of the circuit is minimum

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0.35 mH

35 mH

3.5 mH

Zero

answer is A.

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Detailed Solution

Capacitance of wireFor impedance of the circuit to be minimum

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