A wire of length /, made of material resistivity ρ is cut into two equal parts. The resistivity of the two parts are equal to
Answers
Answer:
So, when you cut a wire into two exactly equal halves, the resistance will also be down to half. Resistivity, on the other hand, is a property of a material, so unless you change the material of the wire, resistivity will remain same. But resistivity depends on temperature.
The resistivity of the two parts will be same.
Explanation:
Given that,
Length = l
Resistivity = ρ
We know that,
Relation of resistivity and resistance
Where, = resistivity of wire
R = resistance
A = area of wire
l = length of wire
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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