A copper wire of resistivity P is stretched to reduce its diameter to half its previous value. what is the new resistivity?
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32
Its will remained unchanged because resistivity is not depends upon dimensions.
it depends upon the temperature & nature of material .
it depends upon the temperature & nature of material .
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ANSWER:
Resistivity of new material remains unchanged when copper wire having the resistivity P which is stretched to decrease its diameter to half of its previous value.
TO FIND: New resistivity of given material
EXPLANATION:
The resistivity of a material depends upon the temperature and nature of the material. Thus, reducing the diameter or radius to any value has no effect on the resistivity of the material. The resistivity of the material remains unchanged.
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