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frez [133]
3 years ago
10

What are the principles of a micrometer screw guage

Physics
1 answer:
Usimov [2.4K]3 years ago
4 0
Screw gauge or micrometer screw gauge is a measuring instrument used for precision measurement. A measuring device used extensively in the mechanical engineering field.

Hope this helps :)
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a wire of a certain material has resistance r and diameter d a second wire of the same material and length is found to have resi
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<h2>d₂ = 3d</h2><h2>The diameter of the second wire is 3 times that of the initial wire.</h2>

Explanation:

Using the formula for calculating the resistivity of an object to find the diameter.

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Since the length and resistivity are the same;

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Equating 1 and 2;

Rπd²/4L =  (Rπd₂²)/36L₂

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√d₂² = √9d²

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