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ECE201_5_Qi

# ECE201_5_Qi - ECE 201 Lecture 5 Announcements • Graded...

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Unformatted text preview: ECE 201 Lecture 5 Announcements • Graded homework to be picked up in EE 26 • Homework solutions are posted the day after it is due. • New Syllabus is posted on the course web page (times and locations of the review sessions). • TA schedule is posted outside EE 26. • Do you mind putting your names on your homeworks? Revisit KCL +- Circuit element-2cos(2t) A-9cos(2t) A 3cos(2t) A cos(2t) A ? Current in: -2cos(2t) A Current out: [-9cos(2t)]+cos(2t)+ ? +3cos(2t) Apply KCL:-2cos(2t)= [-9cos(2t)]+cos(2t)+ ? +3cos(2t) Rearrange: ? = [-2cos(2t)]-[-9cos(2t)]-cos(2t)-3cos(2t) +- Circuit element 2cos(2t) A 9cos(2t) A 3cos(2t) A cos(2t) A ? Current in: 9cos(2t) A Current out: cos(2t)+ ? +3cos(2t)+2cos(2t) Apply KCL: 9cos(2t)= cos(2t)+ ? +3cos(2t)+2cos(2t) ? = 9cos(2t)-cos(2t)-3cos(2t)-2cos(2t) Revisit KVL Find V AB , V BC and V AC A B C E F G H- + 1V +- 3V +- 6V- + +- 2V 10V Set V A =0 V V E =1 V V F =-2 V V H =-8 V V C =-18 V V B =3 V V AB =V A-V B =-3V; V BC =V B-V C =21V; V AC =V A-V C =18V Example: Find power absorbed or delivered...
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ECE201_5_Qi - ECE 201 Lecture 5 Announcements • Graded...

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