SP212‐Spring‐2016 CH‐26 Assignment First do the following Wiley‐Plus assignment: Assignment #26 After completing the Wiley‐Plus, in your homework notebook, complete the following problems: CH26 Questions # 2, 5, and 8. CH26 Problems # None additional assigned To check your work, the answers to the odd problems are in the back of the book. The answers to the even problems are: None additional assigned Homework Then complete the attached worksheets: (Note: the above problems were designed to ensure you have the skills to solve the worksheet problems. It is imperative to your learning of the problem solving technique to do the above problems BEFORE attempting the worksheet problems. You are graded on both! Homework notebooks are graded.) CH‐26‐1: For each of the equations below, 1) State what each term is in your own words … 2) What the units of each term are… 3) What is the general use of that equation in your own words? 

A. i   J  dA 

B. E   J
C. V  iR D. R 
L A
E.   0  0 (T  T0 ) F. P  iV  i 2 R 
V2 R
CH‐26‐2: When an SUV stereo system applies 6.5 mV across a wire that is 5.2 m long and has a 0.30 mm radius, the magnitude of the resultant current density is 5.32x104 A/m2. Find what material was used to make the conductor part of the wire (Hint: table 26‐1). Show all work: CH‐26‐3: In the Figure (a) below, a 9.00 V battery is connected to a resistive strip that consists of three sections with the same cross‐sectional areas but different conductivities. Figure (b) below gives the electric potential V(x) versus position x along the strip. The horizontal scale is set by xs = 8.00 mm. Section 3 has conductivity 3.00 × 107 (Ω ∙ m)–1. What is the conductivity of section 1? Show all work: CH‐26‐4: Gold wiring bonding is used to connect terminals in many Integrated Circuit(IC) computer chips.
The diameter of the wire used is 15µm. An unknown length of gold wire is fed through the
bonding machine and has a resistance of 100.0 Ω at 20.0°C and a temperature coefficient of
resistivity of α = 4.0x10-3 (Cº)-1. What is the temperature of the gold wire when it has a
resistance of 90.0 Ω and what was the length of wire in the machine?
Show all work: