Question

Calculate the resistance 50 feet of awg no. 12 solid copper wire round to nearest 0. 01 ohms.

Answer 1

The resistance of the conductor is 0.07940 Ohms.

What is the relation between resistance and area of wire?

The wire's resistance is inversely related to its cross-sectional area; as the area drops, so does the resistance.

and it is formulated as:  

$R=p\frac{l}{s}$

where,

p - resistivity of the conductor (0.0214-ohm mm²/m)

R - resistance

l- length of conductor (50 feet) (15.24 m)

s - the area of the wire

Thus the resistance can be calculated as

R = 0.07940 Ohms.

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