To Study the Effect of Variation of Resistance in LCR Series AC Circuits

In introductory physics the series LCR circuit is usually discussed in the context of the AC-driven circuit. A detailed investigation of the effect of resistance on the series LCR circuit has been given. The circuit provides a wide range of laboratory problems, demonstrations, theoretical and computational activities. In the present work, for fixed values of LC, the effect of resistance on the LCR series AC circuit is studied experimentally. At first it would be checked the effect of resistance on resonant frequency, band width and quality factor. This work also focuses on measuring precise values of passive components such as resistors, inductors and capacitors through non-contact means through inductive or capacitive or resistive coupling for series. However, if one of the circuit components such as the resistance, inductance or capacitance is made to vary, it will cause a change in the output voltage with respect to change in frequency of signal generator.