Concept explainers
The length and the radius of the conductor.
Answer to Problem 42PQ
The length and the radius of the conductor are
Explanation of Solution
Write the resistance of the conductor.
Here,
Rearrange equation (I) for
Write the relation for the volume of the given silver cylindrical conductor.
Here,
Alternatively the volume of the cylindrical conductor is,
Write the relation for the area of the conductor.
Conclusion:
Substitute
Substitute
Combine equation (II) and (IV).
Length of the wire is given by
Substitute
Substitute
Therefore, the length and the radius of the conductor are
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Chapter 28 Solutions
Physics for Scientists and Engineers: Foundations and Connections
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