A wire of length L and resistance R is stretched so that its length its doubled.
How will its (a) Resistance change (b) Resistivety change
Answers
Answered by
20
Hi friend!!!!
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Given,A wire of length L and resistance R is stretched so that its length its doubled
Its resistance also becomes twice of the initial Resistance since resistance is directly proportional to length.
Its resistivity does not change..because resistivity depends only on the nature of the substance but not on the length.
__________________________
I hope this will help u ;)
___________________________
Given,A wire of length L and resistance R is stretched so that its length its doubled
Its resistance also becomes twice of the initial Resistance since resistance is directly proportional to length.
Its resistivity does not change..because resistivity depends only on the nature of the substance but not on the length.
__________________________
I hope this will help u ;)
Answered by
5
Resistance is directly proptional to length , so if the length of wire is going to 2 times then its resistance get doubled. Also keep in mind that if the cross-sectional area reducing then R is increasing. and Resistivety is material property it is not going to affected, causetThe resistivity of a material is dependent upon the material's electronic structure and its temperature.
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