338 BELL SYSTEM TECIISICAL JOIRSAL 



units i)iT (in., wluTf tluTO is an equal parallel rt-turn sn siui.ited tliat 

 k=0.2.") and a frequency of 5,000 c\'cles per second is applied to the 

 circuit. Then m = -\/47rXa) = 15.26 and .v- = /«a = 15.20X0.4125 = 0.30. 

 When the ratio of the thickness of the conductor to the radius is 

 greater than about 0.01 the prc)\iinit\- effect correction factor C is 

 appreciahk'. If the ratio is 0.05, reading C from the curves, gives 

 C= 1.004. I'roni formula (42), 7?o = 5.24 ohms per mi. wiiich makes 

 the resistance R = 'y.i>.\ ohms |)er mi. 



