The frequency of voltage source used in ac circuit is 5 kHz. The circuit contains a coil of inductance of 0.5 mH, a capacitor of capacitance of `10muF` and resistor of resistance 8 `Omega` are connected in series with source. The impedance of circuit isA. `14.9Omega`B. `1.49Omega`C. `1.49Omega`D. `18.9Omega`

The frequency of voltage source used in ac circuit is 5 kHz. The circu

1.	The frequency of voltage source used in ac circuit is 5 kHz. The circuit contains a coil of inductance of 0.5 mH, a capacitor of capacitance of `10muF` and resistor of resistance 8 `Omega` are connected in series with source. The impedance of circuit isA. `14.9Omega`B. `1.49Omega`C. `1.49Omega`D. `18.9Omega`
Answer» Correct Answer - A `X_(L)=2pifL` `=2xx3.14xx5xx10^(3)xx0.5xx10^(-3)` `=15.7Omega` `X_(C)=(1)/(2pifC)=(1)/(2xx3.14xx5xx10^(3)xx10xx10^(-6))` `=3.185Omega` `Z=sqrt(R^(2)(X_(L)-X_(C))^(2))` `=sqrt(64+(15.7-3.2)^(2))=14.84Omega`

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