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Unformatted text preview: A sinusoidal AC oscillator I=I max sin(ωt) is used. It produces a maximum voltage drop across the inductor of 10V every 25 μs. (a) What is the impedance and phase angle of the circuit? (b) What is the maximum current across the capacitor? (c) What is the maximum voltage across the capacitor and the earliest time at which it is attained? (d) What is the voltage across the resistor and inductor at t=10μs? (e) What is the RMS voltage of the oscillator? What is the voltage output at t=0? (f) If we want to replace the oscillator with a new one such that the maximum power is dissipated across the resistor, what should the new frequency be? An AC generator supplies 120 V at 60 Hz. When S is open, current leads the emf by 20°. When S is in position 1, current lags the emf by 30°. When S is in position 2, I rms = 2 A. Find L, R, and C. ~ L C C R S 1 2...
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