Question

a wire of resistance 10 ohm uniformly to thrice its original length. calculate the resistance of the streched wire.​

Answer 1

Answer:

check this link of Brainly

Explanation:

https://brainly.in/question/1559538

Answer 2

Answer:

Normally,on stretching It's resistance become thrice as per length parameter or 30ohm

Explanation:

Initial length-> l

Initial Area -> a

We know that,

Resistance = πl/a=R [Taken π as resistivity]

So, After stretching

Final length->3l

Now,

Resistance= π(3l)/a=3πl/a=3R

Hope you have understood

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