Question
Download Solution PDFThe impedance of a series L-C-R circuit at resonance is:
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Answer (Detailed Solution Below)
Option 4 : R
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Download Solution PDFConcept:
- Resonance: It is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.
- Example: Playground swing, which acts as a pendulum.
- Average power: It is the average amount of work done or energy converted per unit of time.
- SI unit: watt (W)
- Impedance: It is the measure of the total opposition provided by the circuit or a part of a circuit presents to electric current.
- Impedance includes both resistance and reactance
The impedance of the series RLC circuit is given by,
\({\bf{Z}} = \sqrt {{{\bf{R}}^2} + {{\left( {{{\bf{X}}_{\bf{C}}} - {{\bf{X}}_{\bf{L}}}} \right)}^2}} \)
Where XC = Capacitive reactance, XL = Inductive reactance, Z = Total circuit impedance
At Resonance XC = XL
Z = R
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