Calculate the resistance of aluminium wire of length 60cm and cross-sectional area 1mm2. The specificresistance of aluminium is 2.6*10-8 ohm-m.
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Answered by
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Length(l)= 60 cm= 60×10⁻² m
Area (A)=1 mm² = 10⁻⁶ m²
Resistivity(ρ)= 2.6× 10⁻⁸ Ω m
Resistance(R)=?
By using the formula,R= ρl/A
=(2.6× 10⁻⁸ × 60×10⁻² ) / 10⁻⁶
=156× 10⁻⁴ Ω
=1.56 × 10⁻² Ω
∴Resistance of the aluminium wire= 1.56 × 10⁻² Ω
Area (A)=1 mm² = 10⁻⁶ m²
Resistivity(ρ)= 2.6× 10⁻⁸ Ω m
Resistance(R)=?
By using the formula,R= ρl/A
=(2.6× 10⁻⁸ × 60×10⁻² ) / 10⁻⁶
=156× 10⁻⁴ Ω
=1.56 × 10⁻² Ω
∴Resistance of the aluminium wire= 1.56 × 10⁻² Ω
Answered by
32
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