Question

The electrical resistance R (in ohms) of a wire is directly proportional to its length L (in feet). If 250 feet of wire has a resistance of 1.3 ohms, find the resistance for 180 ft of wire

Answer 1

R = k L
k = R/L
= 1.3/250

So R(180) = k180
= (1.3/250)*180
= 0.936 ohms

Ans. 0.936 ohms