5-14 A Wheatstone bridge is connected for a Murray loop test as shown in Fig. 5-32 and balanced. Cable a is an aerial cable with a resistance of 0.1 ohm per 1000 ft. Cable b is an underground cable with a resistance of 0.005 ohm per 1000 ft. Neglecting temperature differences, calcu- late the distance Ly from the ground fault to the test set if L, =Lb. R₁-100 $2 R₁ = 500 La E-6V FIGURE 5-32 Circuit for Problem 5-14. Lb Ly