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Unformatted text preview: Rodriguez, Brandon Homework 7 Due: Sep 14 2006, 11:00 am Inst: Andrew J Rader 1 This print-out should have 14 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. Please notice that for your homework to be considered towards your grade, it needs to be submitted one hour before the corresponding recitation starts. Work submitted after this time, but before the DUE DATE on top of this page, will be accepted but not graded. PLEASE REMEMBER THAT YOU MUST CARRY OUT YOUR CALCULA- TIONS TO AT LEAST THREE SIGNIFI- CANT FIGURES. YOUR ANSWER MUST BE WITHIN ONE PERCENT OF THE CORRECT RESULT TO BE MARKED AS CORRECT BY THE SERVER. 001 (part 1 of 1) 5 points Two conductors insulated from each other are charged by transferring electrons from one conductor to the other. After 5 . 416 10 13 have been transferred, the potential difference between the conductors is 6 . 5 V. The charge on an electron is- 1 . 60218 10- 19 C . What is the capacitance of the system? Correct answer: 1 . 33498 10- 6 F. Explanation: Let : e =- 1 . 60218 10- 19 C , N = 5 . 416 10 13 electrons , and V = 6 . 5 V . One conductor gains a charge of Q =- N e while the other gains a charge of- Q. The capacitance of the system is C = q V =- N e V =- (5 . 416 10 13 )(- 1 . 60218 10- 19 C) 6 . 5 V = 1 . 33498 10- 6 F . keywords: 002 (part 1 of 4) 2 points An air-filled capacitor consists of two parallel plates, each with an area of 4 . 6 cm 2 , sepa- rated by a distance 1 . 4 mm . A 20 V potential difference is applied to these plates. The permittivity of a vacuum is 8 . 85419 10- 12 C 2 / N m 2 . 1 pF is equal to 10- 12 F ....
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This note was uploaded on 10/18/2010 for the course PHYSICS 251 taught by Professor Pedon during the Spring '08 term at IUPUI.
- Spring '08