Question

If a wire is stretched to make its length two times, its resistance will become

Answer 1

Answer:

You can see the answer in adjoining pic.

Hope it helps...

Answer 2

⭐Brainly Quality Answer ⭐

Answer:-

✳We have,

Resistance= Resistivity x length/area

◻ When the wire is stretched to double the length,

When the wire is stretched to double the length,the area of cross section gets reduced to half.

SO,

New Resistance = Resistivity x 2length/area/2

I.e,

New resistance = (Resistivity x length/area)x4

i.e, New resistance = Resistance x 4

So when the wire is stretched, the resistance

So when the wire is stretched, the resistancemultiplies by four times.

Hope it help you ✔✔✔

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