Posted by **michelle** on Tuesday, February 15, 2011 at 8:51pm.

What is the resistance of a 2.5 m length of copper wire 1.3 mm in diameter?

- physics -
**Anonymous**, Friday, August 3, 2012 at 11:11pm
Given by,

lenth (L)=2.5mm,Diameter of copper wire =1.3mm,R=?,A=?

A=S=PIE(D/2)squre

s=3.14*(1.3/2)square

=3.14x0.65x0.65 mm

=3.14x0.4225 mm

=1.32665 mm

A=1.32665mm

R=l/A

=2.5/1.32665

=1.9x10-2 ohm

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