This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: homework 05 FAUSAK, TAYLOR Due: Feb 18 2008, 4:00 am 1 Question 1, chap 27, sect 1. part 1 of 2 10 points The current I = a t 2 b t + c in a section of a conductor depends on time. What quantity of charge moves across the section of the conductor from t = 0 to t = t 1 ? 1. q = a 3 t 3 1 b 2 t 2 1 + c 2. q = a 3 t 3 1 b 2 t 2 1 + c t 1 3. q = a t 3 1 b t 2 + c t 1 4. q = a t 2 1 b t 1 + c 5. q = a t 3 1 b 2 t 2 1 + c t 1 Question 2, chap 27, sect 1. part 2 of 2 10 points If I is in A, and a = 4 C / s 3 , b = 3 C / s 2 , and c = 8 C / s, what quantity of charge moves across the section of the conductor from t 1 = 2 s to t 2 = 4 s? Answer in units of C. Question 3, chap 27, sect 3. part 1 of 1 10 points A current of 5 A flows in a copper wire 2 mm in diameter. The density of valence electrons in copper is roughly 9 10 28 m 3 . Find the drift speed of these electrons. Answer in units of m / s. Question 4, chap 27, sect 3. part 1 of 1 10 points A current density of 8 . 2 10 13 A / m 2 exists in the atmosphere where the electric field (due to charged thunderclouds in the vicinity) is 57 V / m....
View Full
Document
 Spring '07
 KBrowning

Click to edit the document details