A Radio 'lming Circuit. The minimum capacitance of a variable capacitor in a radio is 4.18 pF.
(a) What is the inductance of a coil connected ro this capacitor if the oscillation frequency of the L-C circuit is 1600 X l03 Hz, corresponding ro one end of the AM radio broadcast band. when the capacitor is set ro its minimum capacitance?
(b) The frequency at the other end of the broadcast band is 540 X l03 Hz. What is the maximum capacitance of the capacitor if the oscillation frequency is adjustable over the range of the broadcast band?




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October 18, 2010

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