A series R–L–C circuit having an inductance of 0.40 H has an instantaneous voltage, v = 60 sin(4000t −(π/6)) volts and an instantaneous current, i =2.0 sin 4000t amperes.Determine (a) the values of the circuit resistance and capacitance and (b) the frequency at which the circuit will be resonant.    Answer: (a) 26 ohms, 154.8 nF (b) 639.6 Hz

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A series RLcircuit having an inductance of 0.40 H has an instantaneous voltage,

= 60 sin(4000/6)) volts and an instantaneous current,

=2.0 sin 4000amperes.Determine (a) the values of the circuit resistance and capacitance and (b) the frequency at which the circuit will be resonant.   

Answer: (a) 26 ohms, 154.8 nF (b) 639.6 Hz

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