Two kettles, each of which consumes 400 W at a voltage of 220 V, boil when connected in series

Two kettles, each of which consumes 400 W at a voltage of 220 V, boil when connected in series and in parallel at the same time. What is the resistance of the lead wires?

Using general definitions and terms of physical science for the initial task, we get:

1. When kettles heat the same amount of water, accompanied by their simultaneous boiling, the same power is released:

P1 = P2.

2.Taking into account the sequential chain of performing the required actions, we get:

R0 = 2002400 = 100 Ohm = 0.1 kOhm.