610 CHAPTER 17 Current and Resistance
10. Three resistors, A, B, and C, are connected in paral—
lel and attached to a battery, with the resistance of A
being the smallest and the resistance of C the greatest.
Which resistor carries the highest current? (a
Physics 202 Homework, Day 12: Chapter 17: #25,33,34,36,45
25. A certain light bulb has a tungsten filament having a resistance of 15W at 20C, and 160W when hot.
Assume that the equation R = R0 @ 1 + aHT - T0 LD can be used over the large temperature rang
Round electric cable, wire, and wiring
Cable diameter to circle cross-sectional area and vice versa
Cross section is just a two-dimensional view of a slice through an object.
An often asked question: How can you convert the diameter of a rou
Name: _ Class Period: _
September 5, 2014
Solve the following problems. Show your work to earn the credit. Each problem is worth 5 points: 1 point
correctly label ALL given, 2 points write the correct equation and plug-in the correc
The following chapter contains practical information on the behaviour, during and after subsequent treatment, of
the alloys delivered by Isabellenhtte. This information is intended to assist in selecting the correct alloy for the
Problem 1. If a current of 80.0 mA exists in a metal wire, how many electrons flow past a
given cross section of the wire in 10.0 min? Sketch the directions of the current and the
Solution: The charge that moves past the cross section is
CHAPTER 26 CURRENT AND RESISTANCE
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$3M *Wnrked-Qut solution aveﬂableyin V _y I I, I
~ - -~_ ' Number of dots indiCates jewel: of problem difficulty
sec. 2&2 Electric Current
«1 During the 4.0 min a 5.
Currents, Resistivity and Ohm's Law - Practice
1. During the 4.0 min a 5.0 A current is set up in a wire.
A. How many coulombs pass through any cross section across the wire's
B. How many electrons pass through any cross section across the