a wire of length 3 metre and area of cross section 1.7 into 10 raise to the power 6 metre square has been resistance 3 into 10 raise to the power minus 2 ohm what is the formula for resistance of the wire and what is the unit
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A wire of length 3 m and area of cross-section 1.7 × 10⁻⁶ m² has a resistance 3 × 10⁻² Ωm . What is the formula for resistivity of the wire and what is the unit of it ?
Resistivity formula and unit
Resistivity of the wire ρ = R × A / l
Where,
R = Resistance
l = length of the wire
A = Cross section of the wire
SI unit of Resistivity is Ωm.
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