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OpenStudy (anonymous):
The input voltage to the series R=4ohm and L=1/pi Henry is expresed as the following Fourier series: Vi=4/pi(sin pi t+1/3sin 3pi t+1/5sin 5pi t+.....). 1.What is RMS value of the input voltage? 2.What is the peak amplitude of the third harmonic of circuit current response?
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