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# HW17 - Platt David Homework 17 Due 4:00 am Inst Ken Shih...

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Platt, David – Homework 17 – Due: Oct 17 2005, 4:00 am – Inst: Ken Shih 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. Please learn chapter 30, section 1 by your- self to solve some of these problems. This section will be included in Quiz2. 001 (part 1 of 2) 10 points Assume: The mobile charge carriers are ei- ther electrons or holes. The holes have the same magnitude of charge as the elec- trons. The number of mobile charge car- riers for this particular material is n = 8 . 49 × 10 28 electrons / m 3 . Note: In the figure, the point at the upper edge P 1 and at the lower edge P 2 have the same x coordinate. A constant magnetic field of magnitude points out of the paper. There is a steady flow of a horizontal current flowing from left to right in the x direction. 2.2 m 4 . 9 cm 6 cm 7 . 5 A P 1 P 2 V ~ B B = 1 . 2 T y x The charge on the electron is 1 . 6021 × 10 - 19 C.

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