Figure 4.37 shows the conductor configuration of a three-phase transmission line anda telephone line supported on the same towers. The power line carries a balanced current of 250 A/phase at 60 Hz,...

Figure 4.37 shows the conductor configuration of a three-phase transmission line and
a telephone line supported on the same towers. The power line carries a balanced current of 250 A/phase at 60 Hz, while the telephone line is directly located below
phase b. Assume balanced three-phase currents in the power line. Calculate the voltage per kilometer induced in the telephone line.