A coil of inductance 200µH and resistance 50.27ohms  and a variable capacitor are connected in series to a 5 mV supply of frequency 2MHz. Determine (a) the value of capacitance to tune the circuit to resonance, (b) the supply current at resonance, (c) the p.d. across the capacitor at resonance,the bandwidth, and the half-power frequencies Answers:

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A coil of inductance 200µH and resistance 50.27ohms  and a variable capacitor are

connected in series to a 5 mV supply of frequency 2MHz. Determine (a) the value

of capacitance to tune the circuit to resonance, (b) the supply current at resonance,

(c) the p.d. across the capacitor at resonance,the bandwidth, and the half-power

frequencies

Answers: 

C= 31.66 pF,I= 99.46 µA,P.D= 250 mV,

bandwidth=40 kHz, and half power frequency= 2.02 MHz, 1.98 MHz

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