Write down and expression for the resistance of a metallic wire in terms of the resistivity.
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Answered by
189
Resistance = Resistivity * length of metallic wire/Area of cross section of wire
R = ρ l/a
R = ρ l/a
Answered by
85
The resistance of an electric circuit is defined as the ratio of the voltage applied on it to the electric current that passes through it.
The resistivity of a wire depends on the material that is used to make the wire.
The resistance of a metallic wire in terms of resistivity is given as
R = ρl/A
where
R = resistance of the wire
ρ = resistance of the wire
l = length of the wire
A = cross-sectional area of the wire
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