Concept explainers
The resistance of
Answer to Problem 81GP
Explanation of Solution
Given info:
Resistivity of copper,
Inner diameter,
Outer diameter,
Length,
Formula used:
Resistance:
Where,
Calculation:
According to the question, the area of the cross-sectional of the wireis the area difference between two circles. So,
Also, the cross-sectional area of the wire is circular. So, the area:
Where,
According to the question,
Radius,
Where,
So, resistance:
Substitute the given values:
Conclusion: The resistance is
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