Resistivity of a wire depends upon:

It is constant for a given material

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Temperature

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Length of the wire

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Area of cross section

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Solution

The correct option is B
Temperature

Resistivity depends on temperature.

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Similar questions

Q. Breaking force depends upon the area of the section of the wire for a given material.

Q. A wire of a given material having length

l

and area of cross-section

A

has a resistance

8 Ω

. Determine the resistance of another wire of same material having length

2 l

and area of cross-section

\frac{A}{2}

Question 3
Electrical resistivity of a given metallic wire depends upon

(a) its length
(b) its thickness
(c) its shape
(d) nature of the material

Q. Calculate the area of cross-section of a wire if its length is 1.0 m, its resistance is 23 Ω and the resistivity of the material of the wire is 1.84 × 10⁻⁶ Ω m.

Four wires of same materials have the following dimensions:
Wire $1$ : Length $l$ , Cross section area $A$
Wire $2$ : Length $l$ , Cross section area $2 A$
Wire $3$ : Length $0.5 l$ , Cross section area $1.5 A$
Wire $4$ : Length $2 l$ , Cross section area $0.5 A$

Which wire has the highest resistance?

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Resistivity of a wire depends upon:

The correct option is B Temperature Resistivity depends on temperature.

The correct option is B
Temperature

Resistivity depends on temperature.