Question

How will the resistivity of a conductor change when its length is tripled by stretching it?
3 times
1/3 times
no change​

Answer 1

Resistivity of a conductor such as wire will increase by nine times when it is stretched by three times.  

It is directly proportional to the length and inversely proportional to diameter.  

When the conductor is stretched, the diameter decreases and the length increase increasing resistivity.  

So the resistivity will also triple.

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Answer 2

Answer:

3 times

Explanation:

Resistivity of a conductor such as wire will increase by nine times when it is stretched by three times. It is directly proportional to the length and inversely proportional to diameter. ... So the resistivity will also triple