Question

Write the expression for the resistance of a conducting
wire in terms of length and area of cross section.???​

Answer 1

Explanation:

The resistance of a metallic wire in terms of resistivity is given as:

R=ρl/A

Here, ρ is the resistivity of wire, l is the length, A is the area of cross-section and R is the resistance of wire.

Hope this helps :)

Answer 2

Answer:

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Explanation:

Let R be the resistance of a conducting wire of length l and area of cross-section A. We then have:

R = ρl/A

Here ρ is a constant characteristic of the material of the wire and is called its resistivity. Thus,

Resistance = (Resistivity of the material of the wire) x (length of the wire)/(Area of cross-section of the wire)