ECE102_F09_Quiz1_solutions

ECE102_F09_Quiz1_solutions - ECE102 Student ID Quiz 1...

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ECE102 Quiz 1 – Question Pages Fall 2009 1 Student ID Name (Last, First) Write your answers on the separate answer pages; we will not look at these question pages. Question 1 (2 + 3 = 5 points): (a) 1 4 5 = j e A j π . What is the magnitude of A ? What is the phase of A , expressed as a value between - π and π ? (b) The graph on the right shows the function ) 2 sin( ) ( φ + = t f A t y Find A , f and (with units). Question 2 (3 + 2 = 5 points): (a) Find v out / v in . (b) Find current i as a function of v in . v in a v 1 10 + - v 1 v out 10 v in a v 1 10 + - v 1 10 i a = 2 A/V a = 2 A/V 10 V 0 10 time (s) y(t)
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ECE102 Quiz 1 – Question Pages Fall 2009 2 Question 3 (3 + 3 = 6 points): In both circuits above, at time t = - , the capacitor is discharged (i.e. voltage = 0). (a) For circuit 1, sketch the voltage v out1 as a function of time. What is the voltage at
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ECE102_F09_Quiz1_solutions - ECE102 Student ID Quiz 1...

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