Assignment 3

# Assignment 3 - WebCT Quiz http/webct.mcmaster.ca/SCRIPT/MATLS_1M03_T2_06_newRestore/s Assignment 3(ch 18 19 Name BRYCE JONES Start time 8:39pm

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WebCT Quiz http://webct.mcmaster.ca/SCRIPT/MATLS_1M03_T2_06_newRestore/s. .. 1 of 3 11/02/2006 8:40 PM Name: BRYCE JONES Start time: February 11, 2006 8:39pm Number of questions: 15 Finish Help Question 1 (2 points) The conductivity of a 3.24 mm-diameter cylindrical silicon specimen if found to be 23.2 (Ohm-m) -1 . Calculate the resistance (in Ohm) of a 39.5 mm length of the specimen. Use decimal notation, digits after decimal: 0 Answer: Units: Save answer Question 2 (1 point) The typical electrical conductivity value/range for semiconducting materials is: a. 10 7 (Ω-m) -1 b. 10 -20 to 10 -10 (Ω-m) -1 c. 10 -6 to 10 4 (Ω-m) -1 Save answer Question 3 (1 point) The energy corresponding to the highest filled electron state at 0 K is called the _____________ energy. Answer: Save answer Question 4 (2 points) At room temperature the electrical conductivity and electron mobility for a material are 5.3 x 10 8 (Ω-m) -1 and 0.0037 m 2 /V-s, respectively. Calculate the number of free electrons per cubic meter (in m^-3) for this material at room temperature. Use scientific notation, significant figures in answer: 2 Answer: Units: Save answer Question 5 (2 points) A wafer of silicon (an intrinsic semiconductor) is connected to a battery and a lightbulb. If a current is run through the system, will the lightbulb be

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## This note was uploaded on 02/08/2010 for the course MATLS 1M03 taught by Professor Okon during the Winter '09 term at McMaster University.

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Assignment 3 - WebCT Quiz http/webct.mcmaster.ca/SCRIPT/MATLS_1M03_T2_06_newRestore/s Assignment 3(ch 18 19 Name BRYCE JONES Start time 8:39pm

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