What is the resistance (in ohms) of a 30.0-m-long piece of 12 gauge copper wire having a 2.053-mm diameter? [the resistivity of copper is 1.72 x 10-8 ohms x meter]
Added by Heather S.
Step 1
The diameter of the wire is given as 2.053 mm. We can use this to calculate the radius of the wire. Radius (r) = diameter / 2 = 2.053 mm / 2 = 1.0265 mm = 0.0010265 m The cross-sectional area (A) of the wire can be calculated using the formula for the area of a Show more…
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