Question

What happens to the resistivity of a wire if it is stretched?

a) It will increase

b) It will decrease

c) First increases then decreases

d) Remains the same.​

Answer 1

Answer:

The Resistivity of the wire will not change with the change in length. Resistivity is a property of the wire, it doesn't depend upon it's length or cross-sectional area. However, If you are asking about Resistance, it will increase to 4 times it's initial value.

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Answer 2

Answer:

a)

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