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PROBLEMS Given in5 cos (400 120%) A, determine the period of he current and the frequency in Hertz. s galculate the current in the resistor in Fig. P8.S if the voltage input is (a) (0)-10 cos (3771 +180°%) V (b) 00 12 sin (377t +45) V Give the answers in both the time and frequency domains 8.2/Determine the relative phase relationship of the two waves ana M(010 cos (377t- 30) v n)10 cos (3771 +90*) v e.9) Given the following voltage and current itr) ito) 5 sin (377t -20) v D(t) 10 cos (3771 + 30°) v o(r) 2 0 Determine the phase relationship between i() and t. 8.4 Write the expression for the waveform shown in Fig. P8.4 as a cosine function with numerical values for the amplitude, fre- quency, and phase. Figure P8.s 8.6JCalculate the current in the capacitor shown in Fig. PS.6 if the voltage input is a) vo)-10 cos (3771-30) V (b) Ul0 12 sin (377 + 60) V Give the answers in both the time and frequency domains 24V 12 V 111 234챤78910/ 12 ms 24 V 4-3 ко utt) Figure P8.4 Figure P8.6
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Ven 2 レ1ク 90 v(t) l 20vey t) a) V2sin (37 t 2. 2- い! 317x지。 oL-30

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