SOLUTION: The electrical resistance of a wire is directly proportional to its length. If a 36 foot long wire has a resistance of 9 ohm(s) find the resistance of a 48-foot long wire.

Question 543932: The electrical resistance of a wire is directly proportional to its length. If a 36 foot long wire has a resistance of 9 ohm(s) find the resistance of a 48-foot long wire.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The electrical resistance of a wire is directly proportional to its length. If a 36 foot long wire has a resistance of 9 ohm(s) find the resistance of a 48-foot long wire.
-----------------
It's 1/3 longer, so it's 1/3 greater.
= 12 ohms
------------
9/36 = R/48
R = 12 ohms

RELATED QUESTIONS
If #28 copper wire (which has a diameter of 0.0126 inch) has a resistance of 66.17 ohms... (answered by rfer)

The electrical resistance R of a wire varies directly as its length L and inversely as... (answered by Nate)

The electrical resistance R of a wire varies directly as its length L and inversely as... (answered by psbhowmick)

The electrical resistance R of a wire varies directly as its length L and inversly as the (answered by stanbon)

The electrical resistance of a wire varies directly with its length (L) and varies... (answered by Theo,josmiceli)

The electrical resistance of a wire varies directly as its length and inversely as the... (answered by TimothyLamb)

The resistance R of a copper wire varies directly with its radius r and inversely... (answered by ankor@dixie-net.com)

a wire of length 20 m and diameter 0.6 cmTHE ELECTRICAL RESISTANCE r OF A WIRE VARIES... (answered by uma)

the resistance of copper wire varies directly with its length. a copper wire 275 feet... (answered by Earlsdon)