quiz4_sol - I sc =I N = V s/R 1 =5A 6 R N = V oc/I sc V oc...

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UNIVERSITY OF CALIFORNI A College of Engineerin g Department of Electrical Engineerin g and Computer Science s Quiz 4 solution EECS 42/100 B. E. BOSER Tuesday, 9/25/200 7 FALL 2007 1. R eq = (R 2 ||R 3 )+R 1 =(10||10)+5=10 2. I 2 =(R 1 /(R 1 +R 2 ))*3A=1A V 2 =I 2 R 2 =20V 3. V x =(R 3 /(R 1 +R 2 +R 3 ))*50V=(20/50)*50=20V 4. 5. first we short circuit;
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Unformatted text preview: I sc =I N = V s /R 1 =5A 6. R N = V oc /I sc V oc =(R 2 /(R 1 +R 2 ))V s =5V R N =5V/5A=1 Ω 7. R 1 R 4 =R 2 R 3 R 4 =6 Ω 8. (10-V a )/10 +2 –V a /10 =0 V a =15V 9. V 2 /V 1 = -(R 2 /R 1 )=-10 10. V out = -((R 3 /R 2 )V 2 +(R 3 /R 1 )V 1 )=-20V...
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