Question

A wire of length'l' made of material having resistivity p is cut into two equal parts. The
resistivity of the two parts are equal to,​

Answer 1

Answer:

The resistivity of the two parts will be same. If we cut the wire into two equal parts then the length will be change of the wire but will not change the resistivity of the wire. Because resistivity depends upon the material of the wire. Hence, The resistivity of the two parts will be same.

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Answer 2

Answer:

Resistivity is doubled

Explanation:

R = ρ$\frac{l}{A}$        (where ρ is resistivity, l is length and A is area)

So  ρ = R x A / l

Since length is halved,

ρ = R x A / (l / 2)

ρ = 2R x A / l

So resistivity is doubled

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