ECE 81_hw10_solutions_1

ECE 81_hw10_solutions_1 - ECE 81 Lehigh University HW#10...

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ECE 81 Lehigh University 02/26/2007 HW #10 P5.40: ω = 10000 Zeq = R + jL ω + 1/jC ω = 100 + j[500 - 500] = 100 Æ V S = V R + V L + V C = 10 cos( ω t) = 10 0° V Æ I = Vs/Zeq = {10 0°}/{100 0°} = 0.1 0° A Æ V L = I*Z L = 500j*I = 50 90° V Æ V R = I*Z R = 100*I = 10 0° V Æ V C = I*Z C = - 500j*I = 50 - 90° V V L V R = V S I V R Æ peak value ( V L (t) ) = 50 V Æ peak value ( V S (t) ) = 10 V Solutions 1/2 HW10
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ECE 81 Lehigh University 02/26/2006 P5.42: ω = 100 Zeq = R + jL ω = 100 + 50j = 111.8 26.56° Æ V 1 = 100 cos(100t – 90°) = 100 -90° V Æ
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