A pocket AM radio employs a tuning coil of inductance connected in series with a…
PHYSICS · Multi-part · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A pocket AM radio employs a tuning coil of inductance 200μH connected in series with a variable capacitor and a small series resistance of 20Ω.
(a) Calculate the capacitance that will tune the set to receive a broadcast transmitted at 1.000MHz.
(b) Find the magnitude of the impedance of the circuit at this frequency.