The resistance of the copper wire is 8.1 ohm.
Explanation:
Given:
Length of the copper = 200 ft
Diameter of the copper = 0.016 inches
Resistance of the copper=?
Formula for Resistance is given as
R = (ρL/A)
where,
R- Resistance
ρ- Resistivity of the given material
L- Length of the material
A- Area of the material
The solution is as follows:
The resistivity of the copper at t=20°c is 10.37⁽CM*Ω⁾
L= 200 ft
D= 0.016"(inch to mils)
1 inch= 1000 mils
therefore;
0.016 inch = 16 mils
A(cm)=(d mil)²
= 256 cm
R = (ρL/A) = ((10.37 [tex]\times[/tex] 200) / 256 )
= 8.1 Ω Or 8.1 ohm.
