HW1_Prob1_Soln

HW1_Prob1_Soln - Case 7 This may take time to think through...

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Quantity Units Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 Case 7 volts 12 1.5 9 -1.5 $$ ohms 50 133.33 20 60 $$ ohms 100 1300 50000 75 $$ ohms 100 2600 500 300 mA 120 1.5 17.47 -12.5 1000 mA -60 -1 -0.17 10 -2000 mA -60 -0.5 -17.3 2.5 1000 volts 6 0.2 0.35 -0.75 volts 6 1.3 8.65 -0.75 volts 6 1.3 8.65 -0.75 watts -1.44 0 -0.16 -0.02 20 -10 watts 0.72 0 0.01 0.01 3 watts 0.36 0 0 0.01 watts 0.36 0 0.15 0 Impossible? N/A No No No No Yes Yes Yes Power Check watts 0 0 0 0 0 R3 Dissipation 0.95 Notes: ** R3 dissipates >95% of power $$ R's are the same, within the case ## all R's dissipate the same power Reasoning (for impossible conditions): Case 5: I2 and I3 have to have the same polarity, otherwise this results in a res Case 6: If the supply dissipates power, power cannot be conserved, since resis
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Unformatted text preview: Case 7: This may take time to think through, but the parallel resistors get 1/2 th V s R 1 R 2 R 3 I 1 I 2 I 3 V R1 V R2 V R3 P Vs P R1 P R2 P R3 Case 8 0.75 250 1000 1000 1-0.5-0.5 0.25 0.5 0.5 Chosen Somewhat Arbitrarily There is a high probability that this type of question will be on the test. Yes sistor supplying power stors cannot supply power he voltage of R1, and dissipate 1/4 the power of R1, thus power cannot be conserved V s R 1 R 2 R 3 I 1 I 3 2 + -+ -...
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This note was uploaded on 11/02/2010 for the course ECE 3710 taught by Professor Haris during the Spring '07 term at Georgia Tech.

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HW1_Prob1_Soln - Case 7 This may take time to think through...

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