A refers to Average,* refers to problems with answers.
(A)* (Application Problem)
A careless utility worker climbs an aluminum ladder and comes into contact with an overhead power line bearing 24 kV, as shown in Figure P2.45 a. His body resistance is 200 kΩ. How much current flows through his body? The worker wears a good safety shoe. The safety shoe can be modeled as a resistance that is located in series with the 240 V voltages (see Figure P2.45 b). In this situation, the current drops to 40 mA. Calculate the resistance of the shoe.