Networks Analysis and Synthesis

Q1: A coil of resistance R and inductance L has a capacitor C in parallel with it. The source frequency is adjusted to a value equal to resonant frequency. Another capacitor C is added in parallel with the above circuit, the source current will

A increase

B decrease

C remain the same

D may increase or decrease

ANS:B - decrease

The circuit will not in resonance. In parallel resonant circuit the current is minimum at resonance. Therefore, current will increase.



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