Concept explainers
Ratio of the resistivities of the given table.
Answer to Problem 12TP
The required ratio of the resistivity will be
Explanation of Solution
Given:
Wire | Length | Diameter |
Wire | ||
Wire | ||
Wire |
Formula used:
Resistance in the wire
Where,
Calculation:
We know that,
Resistance in the wire
Where,
Now, if the resistance of two or more conductor is same then the required ratio of the resistivity is as follows:
Now, putting
Therefore, the above equation becomes,
Substitute,
Put,
Now, Again put,
The ratio of the resistivity will be
Conclusion:
Thus, by using the equation of the resistance and rearranging, required ratio is obtained.
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Chapter 20 Solutions
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- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning