PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
In a laboratory experiment, a series LCR circuit is assembled with a capacitance of 250pF and an inductance of 180μH.
(i) Calculate the resonant frequency of the circuit in kilohertz.
(ii) A local transmitter operates at 1000kHz. State, with brief reasoning, whether the circuit in its present form can be tuned exactly to that station.
(iii) If exact tuning is not possible, should the capacitance be increased or decreased to achieve resonance at 1000kHz? Justify without numerical calculation.