PCS 224 Midterm: PCS224 - F2012 Midterm (Solution)
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Instructions: you have 75 minutes to complete this exam, this is a closed book exam. The examination is scored out of 40 marks. The points assigned to each question is provided on the question pages: the last page contains reference material. You may carefully separate the last page from the rest of the test. If you do this, then do not submit the last page with your test: the student code of academic conduct is really important! www. ryerson. ca/academicintegrity. For each of the questions in this part, circle your choice on this test and ll in the appropriate bubble on the scantron sheet. The fermi level rises above the intrinsic level, and donor levels appear in the energy gap slightly below the conduction band: it becomes a p-type semiconductor. The fermi level rises above the intrinsic level, and donor levels appear in the energy gap slightly below the conduction band: it becomes an n-type semiconductor.
