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# HW4 - (issuedonApril7 Policies:...

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Applied Electronics 2010 Problem Set 4 (issued on April 7) Policies: Submit your solution to the TA in the classroom before starting the April 14 class . If you submit your solution after the due time, 50% will be deducted from your grade and any excuses will NOT be allowed for the delay. Cheating on the homework will result in ZERO grades for everyone involved. Discussions on the problems are, of course, allowed. However, in that case, you MUST identify the names and their ID numbers in your solution cover page. Problem 1 When the OP amp is ideal, calculate the following: (a) v a (b) v o (c) i a (d) i o Problem 2 Assume that the ideal OP amp in the circuit below is operating in its linear region. (a) Calculate the power delivered to the 12 kΩ load resistor. (b) Repeat part (a) when the OP amp removed (that is, when the nodes a and b are directly connected). (c) Find the ratio of the power found in part (a) to that found in part (b). (d) Does the insertion of the OP amp between the source and the load serve a useful purpose? Explain.

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