Physics
7th Edition
ISBN: 9780321929013
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 18, Problem 1OQ
To determine
The conductor with the least resistance.
Expert Solution & Answer
Answer to Problem 1OQ
Solution: The conductor (b) gives the greatest resistance while the conductor (c) gives the least resistance.
Explanation of Solution
The resistance of a cylindrical conductor is given by:
R =
As we can see, resistance is directly proportional to length and inversely proportional to area (or diameter).
Among the four conductors given, (b) has the greatest length and the least diameter, so it would have the greatest resistance.
Conductor (c) has the least length and the greatest diameter, so it would offer the least resistance.
Conclusion: Thus, the required answer is determined.
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Chapter 18 Solutions
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